Battery cell spacer, battery cell, battery pack and vehicle

Abstract

A spacer (10) for a battery cell (1), a battery cell (1), a battery pack, and a vehicle, the spacer (10) comprising a spacer body (100), the spacer body (100) having an accommodating groove (110), a gap (120) at the bottom wall of the accommodating groove (110), the gap (120) communicating with the accommodating groove (110), the gap (120) suitable for passing a tab (31) of a battery cell (1) through, so that a portion of the structure of the tab (31) is accommodated within the accommodating groove (110), the width of the spacer body (100) is D, and the width of the gap (120) is d, satisfying the relationship 3*d≦2*D.

Description

[Technical Field]

[0001] This application is based on Chinese patent application No. 202211716323.1, filed on December 29, 2022, and Chinese patent application No. 202223610839.6, filed on December 29, 2022, and claims priority to the above Chinese patent application, the entire contents of which are hereby incorporated by reference into this application.

[0002] The present application relates to the technical field of vehicles, and more particularly to a spacer for a battery cell, a battery cell, a battery pack, and a vehicle. [Background technology]

[0003] In the related art, a battery cell may include a cover plate, a bottom plastic, and a cell, where the bottom plastic abuts between the cover plate and the cell.

[0004] In the prior art, in order to meet the welding requirements of the tab, one side edge of the bottom plastic cannot be completely closed, so after the tab is bent, the battery cell cannot be effectively isolated from the housing, which increases the risk of short circuit between the tab and the housing, and deteriorates the insulation and safety of the battery cell. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application aims to solve at least one of the technical problems existing in the prior art, and therefore, one objective of the present application is to provide a spacer for a battery cell, which can effectively improve the insulation and safety of the battery cell.

[0006] Another object of the present application is to provide a battery cell.

[0007] Another object of the present application is to provide a battery pack.

[0008] One final object of this application is to provide a vehicle.

[0009] The battery cell spacer proposed by the present application comprises: The spacer includes a spacer body having an accommodating groove, a gap provided in the bottom wall of the accommodating groove, the gap communicating with the accommodating groove, and the gap suitable for passing a tab of the battery cell therethrough, such that a portion of the tab structure is accommodated within the accommodating groove.

[0010] The width of the spacer body is D, and the width of the gap is d, which satisfies the relation 3*d≦2*D.

[0011] The battery cell spacers proposed in the embodiments of this application have a receiving groove and a gap in the spacer body, and the gap is connected to the receiving groove, so that the tab can be isolated and shaped through the spacer, and a portion of the tab structure can be constrained inside the spacer, maintaining insulation between the tab and the battery cell housing, thereby significantly improving the insulation and safety of the battery cell. By setting the width of the gap to be no more than 2 / 3 of the width of the spacer body, the spacer can achieve the best insulation effect for the tab, avoiding the problem of the spacer's insulation effect being poor due to an excessively large gap.

[0012] In some examples of the present application, the spacer body further has an escape groove, the escape groove and the accommodating groove are arranged along the longitudinal direction of the spacer body, and the escape groove is suitable for discharging gas inside the battery cell.

[0013] In some examples of the present application, the bottom wall of the relief groove is provided with at least one relief hole.

[0014] In some examples of the present application, the number of the relief holes is plural, and the relief holes are arranged at intervals along the longitudinal direction of the spacer body; And / or, the plurality of relief holes are spaced apart along the width direction of the spacer body.

[0015] In some examples of the present application, the spacer is a reinforcing rib provided between the accommodation groove and the relief groove; And / or, the reinforcing ribs are provided between the relief holes.

[0016] In some examples of the present application, the side wall width of the relief groove along the longitudinal direction of the spacer body is D1, and the side wall width of the relief groove along the width direction of the spacer body is D2, and the relationship D2*0.8≦D1≦D2*1.2, and D1≧0.8mm, D2≧0.8mm are satisfied.

[0017] In some examples of the present application, the width of the reinforcing rib is D3, which satisfies the relationship D2*0.5≦D3≦D2.

[0018] In some examples of the present application, the spacer body further includes a mounting groove, which is provided at an end of the receiving groove away from the relief groove.

[0019] In some examples of the present application, the length of the spacer body is L, the length of the relief groove is L1, and the width of the mounting groove is L2, satisfying the relationship L≦(L1+L2)*3, and L1≧3 mm, L2≧3 mm.

[0020] The battery cell provided by the present application comprises: a cover plate component; A cell and a spacer, the spacer being disposed between the cover plate component and the cell, the spacer being the battery cell spacer described above.

[0021] The battery pack provided by the present application comprises: The battery cell spacer as described above, and / or includes the battery cells described above.

[0022] The vehicle submitted by this application is The battery cell spacer as described above, and / or a battery cell as described above, and / or includes the battery pack described above.

[0023] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a structural schematic diagram of a battery cell provided by an embodiment of the present application; FIG. [Figure 2] 1 is a cross-sectional view of a battery cell provided by an embodiment of the present application. [Figure 3] FIG. 3 is an enlarged view of a portion at position A in FIG. 2. [Figure 4] 1 is a structural schematic diagram of a spacer provided by an example of the present application. [Figure 5] FIG. 1 is a front view of a spacer provided by an embodiment of the present application. [Figure 6] 1 is a cross-sectional view of a spacer provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following describes in detail the embodiments of the present application, and examples of the described embodiments are shown in the drawings, where the same or similar reference numerals throughout refer to the same or similar elements, or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are intended to be used to explain the present application, but should not be understood as limiting the present application.

[0026] FIG. 1 is a structural schematic diagram of a battery cell 1 provided according to an embodiment of the present application, FIG. 2 is a cross-sectional view of the battery cell 1 provided according to an embodiment of the present application, FIG. 3 is an enlarged view of a portion at position A in FIG. 2, FIG. 4 is a structural schematic diagram of a spacer 10 provided according to an embodiment of the present application, FIG. 5 is a front view of the spacer 10 provided according to an embodiment of the present application, and FIG. 6 is a cross-sectional view of the spacer 10 provided according to an embodiment of the present application. Hereinafter, with reference to FIGS. 1 to 6, a spacer 10 for a battery cell 1 according to an embodiment of the present application will be described. The spacer 10 includes a spacer body 100 having an accommodating groove 110, a gap 120 formed in a bottom wall of the accommodating groove 110, the gap 120 communicating with the accommodating groove 110, and the gap 120 is suitable for passing a tab 31 of the battery cell 1 through the gap 120, such that a portion of the tab 31 is accommodated in the accommodating groove 110. The width of the spacer body 100 is D, and the width of the gap 120 is d, satisfying the relationship 3*d≦2*D.

[0027] Specifically, the battery cell 1 may include a cover plate component 20, a cell 30, a spacer 10, and a housing 40, wherein the cell 30 may be provided within the housing 40, the spacer 10 may be provided between the cover plate component 20 and the cell 30, and the cover plate component 20 may be fixedly connected to the housing 40, so that the cell 30 and the spacer 10 may be enclosed within the housing 40. When provided in this manner, the spacer 10 presses and fixes the cell 30, thereby preventing the cell 30 from being displaced during the vibration process of the battery cell 1.

[0028] 3 , a tab 31 may be provided at one end of the cell 30, one end of the tab 31 may be electrically connected to positive and negative plates (not shown) inside the cell 30 by welding, and the other end of the tab 31 may be electrically connected to a terminal 50 of the battery cell 1 by welding. This allows the cell 30 to be electrically connected to the terminal 50, and ultimately to an external electric circuit via the terminal 50, thereby enabling the battery cell 1 to charge and discharge. The cover plate component 20 may include a cover plate 21 and a lower plastic 22, the height direction of the battery cell may be in the direction indicated by Z in FIG. 2, one side surface of the lower plastic 22 may be fixedly connected to the underside of the cover plate 21 along the height direction of the battery cell 1 by adhesive or the like, and the other side surface of the lower plastic 22 away from the cover plate 21 may abut against the spacer 10. That is, the lower plastic 22 can be abutted between the spacer 10 and the cover plate 21. When arranged in this manner, the tab 31 can be separated from the cover plate 21 via the lower plastic 22, maintaining an insulating state between the two. This effectively prevents the tab 31 from coming into contact with the cover plate 21 and causing a short circuit in the battery cell 1.

[0029] Continuing to refer to FIGS. 4 to 6 , the spacer body 100 may have a rectangular structure, and the longitudinal direction of the spacer body 100 may be the direction indicated by X in FIG. 3 , the width direction of the spacer body 100 may be the direction indicated by Y in FIG. 3 , and the height direction of the spacer body 100 may be the direction indicated by Z in FIG. 3 . The receiving groove 110 may be integrally formed in the spacer body 100, and the longitudinal direction, width direction, and depth direction of the receiving groove 110 are parallel to the longitudinal direction, width direction, and height direction of the spacer body 100, respectively. The gap 120 may be integrally formed in the bottom wall of the spacer 110, and the gap 120 may penetrate the bottom wall of the receiving groove 110 along the depth direction of the receiving groove 110 and extend along the longitudinal direction of the receiving groove 110. As shown in FIG. 3 , one end of the tab 31 away from the cell 30 may be welded to the terminal 50 through the gap 120. At the same time, a portion of the structure of the tab 31 located between the terminal 50 and the cell can be bent and accommodated in the accommodation groove 110. When arranged in this manner, the tab 31 can be isolated and shaped through the spacer 10, and a portion of the structure of the tab 31 can be constrained inside the spacer 10, thereby maintaining insulation between the tab 31 and the housing 40, thereby significantly improving the insulation and safety of the battery cell 1.

[0030] As shown in FIG. 5, the width of the spacer body 100 can be denoted as D, and the width of the gap 120 can be denoted as d. Here, the relationship between the width of the spacer body 100 and the width of the gap 120 can satisfy the following relationship: 3*d≦2*D, i.e., the width of the gap 120 can be 2 / 3 times or less the width of the spacer body 100. When configured in this manner, the insulating effect of the spacer 10 against the tab 31 can be maximized, and the insulating effect of the spacer 10 can be prevented from being poor due to the gap 120 being too large.

[0031] The spacer 10 for battery cells 1 proposed in the embodiments of this application has a spacer body 100 with a receiving groove 110 and a gap 120, and the gap 120 is connected to the receiving groove 110, thereby isolating and shaping the tab 31 through the spacer 10. A portion of the structure of the tab 31 can be constrained inside the spacer 10, maintaining insulation between the tab 31 and the housing 40 of the battery cell 1, thereby significantly improving the insulation and safety of the battery cell 1. By setting the width of the gap 120 to be no more than two-thirds the width of the spacer body 100, the insulation effect of the spacer 10 for the tab 31 can be optimized, and a poor insulation effect of the spacer 10 due to an excessively large gap 120 can be avoided.

[0032] Continuing to refer to Figures 3 to 6, according to another embodiment of the present application, the spacer body 100 further has an escape groove 130, the escape groove 130 and the accommodating groove 110 are arranged along the longitudinal direction of the spacer body 100, and the escape groove 130 is suitable for discharging gas inside the battery cell 1.

[0033] Specifically, the relief groove 130 and the receiving groove 110 may be adjacently formed along the longitudinal direction of the spacer body 100, and the relief groove 130 may be formed in the spacer body 100 by integral molding, with the longitudinal direction, width direction, and depth direction of the relief groove 130 being parallel to the longitudinal direction, width direction, and height direction of the spacer body 100, respectively. When formed in this manner, when a malfunction occurs inside the cell 30 and a large amount of gas is generated, the relief groove 130 can timely release the gas inside the cell 30, thereby effectively preventing the expansion of the cell 30 and preventing the explosion of the battery cell 1, and effectively reducing potential safety issues of the battery cell 1.

[0034] Continuing to refer to FIGS. 3 to 5, according to another embodiment of the present application, at least one relief hole 140 is provided in the bottom wall of the relief groove 130. As shown in FIG.

[0035] Specifically, the number of the relief holes 140 may be one, two, or more, and the embodiments of the present application are not limited thereto. The shape of the relief holes 140 may be circular, oval, rectangular, or the like, and the present application is not limited thereto. The relief holes 140 may penetrate the bottom wall of the relief groove 130 along the depth direction of the relief groove 130. When provided in this manner, when a malfunction occurs inside the cell 30 and a large amount of gas is generated, the relief holes 140 can timely release the gas inside the cell 30, thereby effectively preventing the expansion of the cell 30 and preventing the explosion of the battery cell 1, and effectively reducing potential safety issues of the battery cell 1.

[0036] Continuing to refer to Figures 4 and 5, in optional embodiments of the present application, the number of relief holes 140 may be multiple, and the multiple relief holes 140 may be spaced apart along the longitudinal direction of the spacer body 100, and / or the multiple relief holes 140 may be spaced apart along the width direction of the spacer body 100.

[0037] Specifically, the number of relief holes 140 may be multiple, and the following embodiment will be described taking six relief holes 140 as an example. The six relief holes 140 are arranged in two rows and three columns on the bottom wall of the relief groove 130. That is, the six relief holes 140 may be arranged in three columns at equal intervals along the length of the relief groove 130, and the six relief holes 140 may be arranged in two rows at equal intervals along the width of the relief groove 130. When arranged in this manner, the exhaust speed of the relief holes 140 can be further improved, and gas generated inside the cell 30 can be quickly discharged.

[0038] Continuing to refer to Figures 4 and 5, according to a further embodiment of the present application, the spacer 10 includes a reinforcing rib 200, the reinforcing rib 200 being disposed between the receiving groove 110 and the relief groove 130, and / or the reinforcing rib 200 being disposed between the relief grooves 140.

[0039] Specifically, the reinforcing rib 200 may be fixedly connected to the spacer body 100 by integral molding, and may be provided extending along the width direction of the spacer body 100, i.e., the longitudinal direction of the reinforcing rib 200 may be parallel to the width direction of the spacer body 100, and the width direction of the reinforcing rib 200 may be parallel to the longitudinal direction of the spacer body 100. The number of reinforcing ribs 200 may be one, two, or more, and the embodiments of the present application are not specifically limited thereto. The following embodiments will be described taking three reinforcing ribs 200 as an example. Here, one reinforcing rib 200 may be provided between the accommodating groove 110 and the relief groove 130, and the other two reinforcing ribs 200 may be provided at intervals between two adjacent rows of relief holes 140. When provided in this manner, the reinforcing rib 200 effectively improves the strength and hardness of the spacer body 100, and prevents the spacer 10 from deforming after being subjected to pressure. As a result, the spacer 10 can be stably abutted between the cover plate component 20 and the cell 30, and the spacer 10 effectively restricts the position of the cell 30, preventing the cell 30 from being displaced during the vibration process of the battery cell 1.

[0040] Continuing to refer to FIG. 5, in an optional mode of the present application, the side wall width of the relief groove 130 along the longitudinal direction of the spacer body 100 is D1, and the side wall width of the relief groove 130 along the width direction of the spacer body 100 is D2, which satisfies the relationship D2*0.8≦D1≦D2*1.2, and D1≧0.8mm, D2≧0.8mm.

[0041] Specifically, as shown in FIG. 5 , the width of the side wall of the relief groove 130 along the longitudinal direction of the spacer body 100 can be denoted as D1, and the width of the side wall of the relief groove 130 along the width direction of the spacer body 100 can be denoted as D2, where D1 may be 0.8 mm or more, and D2 may be 0.8 mm or more, and the magnitude relationship between D1 and D2 may satisfy the following relationship: D2*0.8≦D1≦D2*1.2, that is, D1 may be between 0.8 times D2 and 1.2 times D2. This configuration provides the spacer body 100 with excellent strength and hardness, and prevents the spacer 10 from deforming under pressure.

[0042] Continuing to refer to FIG. 5, in some examples of the present application, the width of the reinforcing rib 200 is D3, which satisfies the relationship D2*0.5≦D3≦D2.

[0043] Specifically, the width of the reinforcing rib 200 can be indicated as D3, which can be between 0.5 times D2 and 1.0 times D2. By being configured in this manner, the spacer body 100 has excellent strength and hardness, and the spacer 10 is prevented from deforming under pressure.

[0044] Continuing to refer to Figures 4 and 5, in some embodiments of the present application, the spacer body 100 further has a mounting groove 150, which is provided at an end of the receiving groove 110 away from the relief groove 130.

[0045] Specifically, the mounting groove 150, the receiving groove 110, and the relief groove 130 may be arranged sequentially along the longitudinal direction of the spacer body 100. That is, the mounting groove 150 and the relief groove 130 may be respectively provided at opposite ends of the receiving groove 110. Here, the longitudinal direction of the mounting groove 150 may be parallel to the width direction of the spacer body 100, and the width direction of the mounting groove 150 may be parallel to the longitudinal direction of the spacer body 100. A plurality of mounting holes (not shown in the drawings) may be provided within the mounting groove 150. When provided in this manner, bolts (not shown in the drawings) or screws (not shown in the drawings) may be used to penetrate and fasten the mounting holes, thereby allowing the spacer 10 to be threadedly connected to the cover plate 21 or housing 40 of the battery cell 1.

[0046] Continuing to refer to FIG. 5, in some possible implementations of the present application, the length of the spacer body 100 is L, the length of the relief groove 130 is L1, and the width of the mounting groove 150 is L2, satisfying the relationship L≦(L1+L2)*3, and L1≧3 mm, L2≧3 mm.

[0047] Specifically, the length of the spacer body 100 can be denoted as L, the length of the relief groove 130 can be denoted as L1, and the width of the mounting groove 150 can be denoted as L2, where L1 may be 3 mm or more, L2 may be 3 mm or more, and the sum of the length of the relief groove 130 and the width of the mounting groove 150 may be 1 / 3 or more of the length of the spacer body 100. When configured in this manner, the vibration resistance of the spacer 10 can be effectively improved, and at the same time, the spacer 10 can be prevented from pressing and damaging the cell 30, thereby effectively restricting the position of the cell 30 and preventing the cell 30 from being displaced during the vibration process of the battery cell 1.

[0048] Continuing to refer to Figures 1 to 3, the battery cell 1 provided in the embodiment of the present application includes a cover plate 20, a cell 30, and a spacer 10, and the spacer 10 is provided between the cover plate 20 and the cell 30, and the spacer 10 is the spacer 10 for the battery cell 1 in the above embodiment. Here, the specific structure and operating principle of the spacer 10 will be explained in detail in the above embodiment, and will not be described here.

[0049] Specifically, the battery cell 1 may include a cover plate component 20, a cell 30, a spacer 10, and a housing 40, where the cell 30 may be installed within the housing 40, and the spacer 10 may be installed between the cover plate component 20 and the cell 30, and the cover plate component 20 may be fixedly connected to the housing 40, so that the cell 30 and the spacer 10 are enclosed within the housing 40. In this configuration, the spacer 10 presses and fixes the cell 30, thereby preventing displacement of the cell 30 during vibration of the battery cell 1. Furthermore, one end of the cell 30 may be provided with a tab 31, one end of which may be electrically connected to the positive and negative plates inside the cell 30 by welding, and the other end of the tab 31 may be electrically connected to a terminal 50 of the battery cell 1 by welding. In this configuration, the cell 30 may be electrically connected to the terminal 50, and thus the cell 30 may be electrically connected to an external electric circuit via the terminal 50, thereby allowing the battery cell 1 to charge and discharge.

[0050] The cover plate component 20 may include a cover plate 21 and a lower plastic 22, one side surface of the lower plastic 22 may be fixedly connected to the underside of the cover plate 21 along the height direction of the battery cell 1 by gluing or the like, and the other side surface of the lower plastic 22, which is away from the cover plate 21, may abut against the spacer 10. That is, the lower plastic 22 may abut between the spacer 10 and the cover plate 21. When arranged in this manner, the tab 31 may be separated from the cover plate 21 by the lower plastic 22, maintaining an insulating state between them, thereby effectively preventing the tab 31 from coming into contact with the cover plate 21 and causing a short circuit in the battery.

[0051] A battery pack (not shown in the drawings) provided according to the embodiments of the present application includes the spacer 10 for the battery cell 1 of the above embodiment and / or the battery cell 1 of the above embodiment. Here, the specific structure and operating principle of the spacer 10 and the battery cell 1 are explained in detail in the above embodiment and will not be described here.

[0052] A vehicle (not shown in the drawings) provided by an embodiment of the present application includes the spacer 10 for the battery cell 1 of the above embodiment, and / or the battery cell 1 of the above embodiment, and / or the battery pack of the above embodiment. Here, the specific structures and operating principles of the spacer 10, the battery cell 1, and the battery pack are explained in detail in the above embodiment, and will not be described here.

[0053] Other structures of the spacer 10 for the battery cell 1 according to the embodiment of the present application, such as the positive plate, the negative plate, the tab 31, the terminal 50 and the housing 40, and the operation thereof, are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this application, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are shown based on the drawings and are intended merely to facilitate and simplify the description of this application. They do not indicate or imply that the indicated devices or elements have a specific orientation or should be configured or operated in a specific orientation, and therefore should not be understood as limiting this application.

[0055] Furthermore, the terms "first" and "second" are used for explanatory purposes only and should not be understood to indicate or imply relative importance or the number of technical features being indicated. Thus, a feature qualified as "first" or "second" may indicate or imply the inclusion of one or more of the feature. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0056] In this application, unless otherwise expressly specified and limited, the terms "attached," "coupled," "connected," "fixed," etc. should be interpreted broadly, and may refer to, for example, a fixed connection, a detachable connection, or integration, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms according to specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, when a first feature is "above" or "below" a second feature, it may mean that the first feature and the second feature are in direct contact or indirect contact via an intermediate medium. Furthermore, when a first feature is "above," "upper," or "on the upper surface" of a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "on the lower surface" of a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or that the first feature is at a lower horizontal height than the second feature.

[0058] In the description herein, reference to the reference terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific feature, structure, material, or characteristic described in the relevant embodiment or example is included in at least one embodiment or example of the present application. The exemplary use of the above terms in the description herein does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any or multiple embodiments or examples. Furthermore, if not mutually inconsistent, a person skilled in the art may combine different embodiments or examples and features of different embodiments or examples described herein.

[0059] Although the above has already shown and explained examples of the present application, the above examples are merely illustrative and should not be construed as limitations on the present application. Those skilled in the art may make changes, modifications, substitutions and variations to the above examples within the scope of the present application.

Claims

1. A battery cell spacer, a spacer body, the spacer body having an accommodating groove, a gap provided in a bottom wall of the accommodating groove, the gap communicating with the accommodating groove, the gap being suitable for allowing a tab of the battery cell to pass through, such that a part of the tab structure is accommodated in the accommodating groove; A battery cell spacer, wherein the width of the spacer body is D, the width of the gap is d, and the relationship 3*d≦2*D is satisfied.

2. 2. The battery cell spacer according to claim 1, wherein the spacer body further has an escape groove, the escape groove and the accommodating groove are arranged along the longitudinal direction of the spacer body, and the escape groove is suitable for discharging gas inside the battery cell.

3. The battery cell spacer according to claim 2 , wherein at least one relief hole is provided in the bottom wall of the relief groove.

4. The number of the relief holes is plural, and the relief holes are arranged at intervals along the longitudinal direction of the spacer body, The battery cell spacer according to claim 3 , wherein a plurality of the relief holes are arranged at intervals along the width direction of the spacer body.

5. The spacer is The reinforcing rib is provided between the accommodation groove and the relief groove. The battery cell spacer according to claim 4 , wherein the reinforcing ribs are provided between the relief holes.

6. 6. The battery cell spacer according to claim 2, wherein the sidewall width of the escape groove along the longitudinal direction of the spacer body is D1, the sidewall width of the escape groove along the width direction of the spacer body is D2, and the relationship D2*0.8≦D1≦D2*1.2, and D1≧0.8 mm, D2≧0.8 mm are satisfied.

7. The battery cell spacer according to claim 5 , wherein the width of the reinforcing rib is D3 and the relational expression D2*0.5≦D3≦D2 is satisfied.

8. 8. The battery cell spacer according to claim 2, wherein the spacer body further has an attachment groove, the attachment groove being provided at an end of the accommodation groove that is spaced apart from the relief groove.

9. 9. The battery cell spacer according to claim 8, wherein the length of the spacer body is L, the length of the escape groove is L1, and the width of the mounting groove is L2, satisfying the relationship L≦(L1+L2)*3, and further satisfying L1≧3 mm and L2≧3 mm.

10. A battery cell, a cover plate component; A cell and a spacer, the spacer being provided between the cover plate component and the cell, the spacer being the battery cell spacer according to any one of claims 1 to 9.

11. A battery pack, The battery cell spacer according to any one of claims 1 to 9, And / or a battery pack comprising the battery cell according to claim 10.

12. A vehicle, The battery cell spacer according to any one of claims 1 to 9, and / or a battery cell according to claim 10 ; and / or a vehicle comprising the battery pack according to claim 11.

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