Battery cell support and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cell bracket and a battery. The battery cell support comprises a support body and a reinforcing assembly, the support body comprises a perforation part and a liquid leakage unit, and the liquid leakage unit penetrates through the perforation part in the height direction. The reinforcing assembly comprises a first reinforcing piece, the first reinforcing piece is connected to the first end face of the penetrating hole part in the height direction, and the projection of the first reinforcing piece in the height direction covers part of the liquid leakage unit. And / or the reinforcing assembly comprises a second reinforcing piece, the second reinforcing piece is connected to the second end face of the penetrating hole part in the height direction, and the projection of the second reinforcing piece in the height direction covers part of the liquid leakage unit. The structural strength of the liquid leakage unit is improved through the connection of the reinforcing assembly and the penetrating part, the deformation of the battery cell bracket is reduced, the battery cell can be better fixed and supported, and the stability of the battery cell is kept. The battery comprises the battery cell and the battery cell bracket, and the battery cell bracket can play a good role in supporting the battery cell, so that the internal structure of the battery is kept stable, and the safety of the battery is improved.

Description

Technical Field

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

[0002] At present, with the development of battery pack energy storage technology, the safety and quality of battery packs have received more and more attention. In order to enhance the safety of battery packs and avoid the mutual collision of battery cells inside the battery due to bumps or vibrations during transportation and assembly, battery cell brackets are usually used to fix the battery cells, thereby enhancing the mechanical strength of the battery cells.

[0003] Generally, the battery cell bracket is designed as a square frame with holes. Due to material characteristics and hole punching design, the bottom structure of the general battery cell bracket has a large deflection, is prone to large deformation during installation, increasing the installation difficulty. At the same time, after the installation into the shell is completed, there is a risk of rubbing against other components during use or dropping, resulting in a decrease in the structural safety of the single battery.

[0004] Therefore, there is an urgent need for a battery cell bracket and a battery to solve the above problems. Summary of the Utility Model

[0005] An object of the utility model is to provide a battery cell bracket with high structural strength, which can reduce deformation during installation and ensure the use performance of the battery.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provide a battery cell bracket, including:

[0008] A bracket body, the bracket body includes a perforated part, a liquid leakage unit and two support structures. The liquid leakage unit penetrates through the perforated part. The middle parts of the two support structures are respectively connected to both sides of the perforated part in the width direction. The two support structures and the first end surface of the perforated part in the height direction form a top cover limiting groove, and the two support structures and the second end surface of the perforated part in the height direction form a core roll limiting groove;

[0009] A strengthening component, the strengthening component includes a first strengthening member, the first strengthening member is connected to the first end surface, and the projection of the first strengthening member in the height direction covers part of the liquid leakage unit;

[0010] And / or, the strengthening component includes a second strengthening member, the second strengthening member is connected to the second end surface, and the projection of the second strengthening member in the height direction covers part of the liquid leakage unit;

[0011] Wherein, the width direction is perpendicular to the height direction.

[0012] As an optional solution for the battery cell holder, the leakage unit includes a plurality of leakage holes, and the plurality of leakage holes are arranged at intervals with each other in the width direction of the battery cell holder, a first reinforcement member is correspondingly arranged above the leakage unit, and a second reinforcement member is correspondingly arranged below the leakage unit.

[0013] As an optional solution for the battery cell holder, a plurality of the leakage units and the reinforcement components are provided, the plurality of leakage units are arranged at intervals in the length direction of the battery cell holder, and the plurality of leakage units and the plurality of reinforcement components are arranged in one-to-one correspondence.

[0014] As an optional solution of the battery cell support, the support structure includes a first support portion, and the first support portion protrudes from the first end surface along the height direction.

[0015] As an optional solution for the battery cell support, the reinforcement assembly further includes a third reinforcement member, the third reinforcement member is connected to a side of one of the first support parts facing the other first support part, and the third reinforcement member is spaced apart from the perforated part.

[0016] As an optional solution of the battery cell holder, a plurality of the third reinforcement members are connected to each of the first support parts, and the plurality of the third reinforcement members are arranged at intervals in the length direction of the battery cell holder.

[0017] As an optional solution for the battery cell support, the perforated portion, the two first supporting portions and the third reinforcement member form a top cover limiting groove.

[0018] As an optional solution for the battery cell support, the support structure further includes a second support portion, the second support portion protrudes from the second end surface along the height direction, and the perforated portion and the second support portion form a winding core limiting groove.

[0019] As an optional solution of the battery cell support, the width of the battery cell support is D, and the length of the battery cell support is L, wherein L / D<20.

[0020] Another object of the utility model is to provide a battery with high structural strength and capable of maintaining the stability of the battery cell during use.

[0021] To achieve this purpose, the utility model adopts the following technical solutions:

[0022] Provided is a battery, comprising: a battery cell, a top cover and the above-mentioned battery cell bracket, wherein the battery cell is fixed on the battery cell bracket, and the top cover is connected to an end of the battery cell bracket away from the battery cell.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a battery cell support. The support body includes a perforated part, and a liquid leakage unit is arranged through the perforated part in the height direction. A strengthening component is connected to the perforated part. The strengthening component includes a first strengthening piece connected to the first end face of the perforated part, and the projection of the first strengthening piece covers part of the liquid leakage unit; alternatively, the strengthening component includes a second strengthening piece connected to the second end face of the perforated part, and the projection of the second strengthening piece covers below part of the liquid leakage unit; or the strengthening component includes a first strengthening piece and a second strengthening piece, the first strengthening piece covers above part of the liquid leakage unit and the second strengthening piece covers below part of the liquid leakage unit, so that part of the liquid leakage unit is not covered by the strengthening component, ensuring that the liquid leakage unit can normally circulate the electrolyte, and improving the structural strength at the liquid leakage unit by connecting the strengthening component with the perforated part, reducing the deformation amount of the battery cell support during the installation of the battery cell support and the operation of the battery, being able to better fix and support the battery cell, and maintaining the stability of the battery cell.

[0025] The utility model also provides a battery, which includes a battery cell, a top cover and the above-mentioned battery cell support. The battery cell support can play a good supporting role for the battery cell and the top cover, maintain the stability of the internal structure of the battery, and improve the safety and service life of the battery. Description of the Drawings

[0026] Figure 1 is a cross-sectional view of the battery cell support provided by the utility model;

[0027] Figure 2 is a structural schematic diagram of the battery cell support provided by the utility model;

[0028] Figure 3 is an internal structural schematic diagram of the battery provided by the utility model;

[0029] Figure 4 is an assembly schematic diagram of the battery cell support and the top cover of the battery provided by the utility model.

[0030] In the figure:

[0031] 1. Support body; 11. Perforated part; 111. First end face; 112. Second end face; 12. Liquid leakage unit; 121. Liquid leakage hole; 13. First support part; 131. Top cover limit groove; 14. Second support part; 141. Core roll limit groove;

[0032] 2. Strengthening component; 21. First strengthening piece; 22. Second strengthening piece;

[0033] 3. Third strengthening piece;

[0034] 100. Core roll;

[0035] 200, top cover; 210, cover plate; 220, connecting member; 230, terminal post; 240, explosion-proof valve. Detailed implementation manners

[0036] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, 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. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0040] Such as Figures 1 to 2As shown in the figure, the battery cell bracket of this embodiment includes a bracket body 1 and a strengthening component 2. The bracket body 1 includes a perforated part 11, a liquid leakage unit 12, and two support structures. The liquid leakage unit 12 penetrates through the perforated part 11. The middle parts of the two support structures are respectively connected to both sides of the perforated part 11 in the width direction. The two support structures and the first end face 111 of the perforated part 11 in the height direction form a top cover limiting groove 131, and the two support structures and the second end face 112 of the perforated part 11 in the height direction form a core limiting groove 141. The strengthening component 2 includes a first strengthening member 21. The first strengthening member 21 is connected to the first end face 111, and the projection of the first strengthening member 21 in the height direction covers part of the liquid leakage unit 12; alternatively, the strengthening component 2 includes a second strengthening member 22. The second strengthening member 22 is connected to the second end face 112, and the projection of the first strengthening member 21 in the height direction covers part of the liquid leakage unit 12; or, the strengthening component 2 includes a first strengthening member 21 and a second strengthening member 22. The first strengthening member 21 is connected to the first end face 111, and the second strengthening member 22 is connected to the second end face 112. In the height direction, the projection of the first strengthening member 21 covers part of the liquid leakage unit 12, and the projection of the first strengthening member 21 covers part of the liquid leakage unit 12. Wherein, the width direction is Figure 1 the Y direction in Figure 1 and the height direction is the Z direction in

[0041] The battery cell bracket provided in this embodiment, the bracket body 1 includes a perforated part 11. The perforated part 11 is provided with a liquid leakage unit 12 penetrating along the height direction. The strengthening component 2 is connected to the perforated part 11. The strengthening component 2 includes a first strengthening member 21 connected to the first end face 111, and the projection of the first strengthening member 21 covers part of the liquid leakage unit 12; alternatively, the strengthening component 2 includes a second strengthening member 22 connected to the second end face 112, and the projection of the second strengthening member 22 covers below part of the liquid leakage unit 12; or, the strengthening component includes a first strengthening member 21 and a second strengthening member 22. The first strengthening member 21 covers above part of the liquid leakage unit 12 and the second strengthening member 22 covers below part of the liquid leakage unit 12, so that part of the liquid leakage unit 12 is not covered by the strengthening component 2, ensuring that the liquid leakage unit 12 can normally circulate the electrolyte, and improving the structural strength at the liquid leakage unit 12 by connecting the strengthening component 2 with the perforated part 11, reducing the deformation amount of the battery cell bracket during the installation of the battery cell bracket and the operation of the battery, being able to adapt to more working environments, better fixing and supporting the battery cell, and maintaining the stability of the battery cell.

[0042] Optionally, the leakage unit 12 includes a plurality of leakage holes 121, and the plurality of leakage holes 121 are arranged at intervals from each other in the width direction of the battery cell support. A first reinforcing member 21 is correspondingly arranged above the plurality of leakage holes 121 of a leakage unit 12, and a second reinforcing member 22 is correspondingly arranged below the plurality of leakage holes 121 of a leakage unit 12. In this embodiment, the leakage unit 12 includes three leakage holes 121, a first reinforcing member 21 is correspondingly arranged above the three leakage holes 121 of a leakage unit 12, and a second reinforcing member 22 is correspondingly arranged below the three leakage holes 121 of a leakage unit 12, thereby saving manufacturing costs and reducing production difficulty.

[0043] In this embodiment, the leakage hole 121 is a strip hole, which extends along the length direction of the battery support. Figure 2 In the middle X direction, the first reinforcement 21 covers the upper middle part of the leakage hole 121, and the second reinforcement 22 covers the lower middle part of the leakage hole 121, so that the electrolyte can flow from both ends of the leakage hole 121. Since the middle part of the leakage hole 121 is usually the position with the greatest deformation, the first reinforcement 21 and the second reinforcement 22 are used to limit the deformation of the leakage hole 121, thereby limiting the deformation degree of the entire leakage hole 121, saving manufacturing costs. In addition, such a setting reduces the size of the entrance and exit of the leakage hole 121, which can increase the flow rate of the electrolyte and ensure the performance of the battery. Of course, in some other embodiments, the first reinforcement 21 and the second reinforcement 22 can cover one end of the leakage hole 121, wherein the first reinforcement 21 and the second reinforcement 22 can cover the same end of the leakage hole 121, and the first reinforcement 21 and the second reinforcement 22 can also cover different ends of the leakage hole 121, which can also play the effect of reinforcing the leakage hole 121.

[0044] Optionally, a plurality of the leakage units 12 and the reinforcement components 2 are provided, and the plurality of leakage units 12 are arranged at intervals in the length direction of the battery cell support, and the plurality of leakage units 12 are arranged in one-to-one correspondence with the plurality of reinforcement components 2. In this embodiment, seven leakage units 12 and seven reinforcement components 2 are provided, and in some other embodiments, three, six, eight or nine leakage units 12 and reinforcement components 2 can also be provided, and the number of leakage units 12 and reinforcement components 2 can be changed according to the length of the battery cell.

[0045] Furthermore, the support structure includes a first support portion 13, which is connected to the perforated portion 11 and protrudes from the first end surface in the height direction, so that the structural strength of the bracket body 1 is improved, and the first support portion 13 can support the battery top cover 200, and better prevent the battery top cover 200 from displacement, falling off and other adverse phenomena during use, thereby ensuring the stability of the top cover 200.

[0046] Furthermore, the battery cell support further includes a third reinforcing member 3. The third reinforcing member 3 is connected to one side of a first support portion 13 facing the other first support portion 13, and the third reinforcing member 3 is spaced apart from the perforated portion 11. In this embodiment, the third reinforcing member 3 is a reinforcing rib. A plurality of third reinforcing members 3 are provided on both of the first support portions 13. The plurality of third reinforcing members 3 on each first support portion 13 are spaced apart in the length direction, and the plurality of third reinforcing members 3 on the two first support portions 13 correspond to each other one by one. The third reinforcing member 3 and the reinforcing assembly 2 are arranged in an interleaved manner, so as to ensure the overall structural strength of the battery cell support in the length direction. Exemplarily, six third reinforcing members 3 are provided on each first support portion 13. Of course, the number of the third reinforcing members 3 can be adjusted as needed. Optionally, the cross section of the third reinforcing member 3 can be set to other regular or irregular shapes such as a rectangle or a semi-circle.

[0047] Preferably, the perforated portion 11, the two first support portions 13 and the third reinforcing member 3 form a top cover limiting groove 131. A part of the battery top cover 200 can be limited in the top cover limiting groove 131, which can better prevent the battery top cover 200 from having problems such as displacement and falling off during use, thereby ensuring the stability of the top cover 200. In addition, the top cover limiting groove 131 can also provide a flow channel for the electrolyte to ensure the smooth flow of the electrolyte through the liquid leakage hole 121.

[0048] Furthermore, the support structure further includes a second support portion 14. The second support portion 14 is connected to the perforated portion 11 and protrudes from the second end face in the height direction, which enlarges the size of the support structure and further improves the structural strength of the support body 1. The second support portion 14 can support the core 100, which can better prevent the battery core 100 from having problems such as displacement and falling off during use, thereby ensuring the stability of the core 100.

[0049] Preferably, the perforated portion 11 and the two second support portions 14 form a core limiting groove 141. The core 100 can be limited in the core limiting groove 141, which further ensures the stability of the core 100, and the core limiting groove 141 also provides a flow channel for the electrolyte to ensure the smooth flow of the electrolyte through the liquid leakage hole 121.

[0050] It should be noted that to prevent the battery cell support from being too long and thus affecting the structural deflection, the width of the battery cell support is defined as D, and the length of the battery cell support is defined as L. Among them, L / D < 20 is satisfied, so that the ratio of the length to the width of the battery cell support remains in a suitable range to ensure the structural strength. Optionally, the value of L / D can be 5, 10 or 15, etc.

[0051] Such as Figure 3 and Figure 4As shown, this embodiment also provides a battery, including a winding core 100 and the above-mentioned battery cell bracket, the winding core 100 is fixed on the battery cell bracket, and the battery cell bracket can provide good support for the winding core 100, maintain the stability of the internal structure of the battery, and improve the safety and service life of the battery.

[0052] In this embodiment, at least part of the core 100 is limited in the core limiting groove 141 to ensure the relative stability between the core 100 and the battery holder. Preferably, the battery includes two battery holders, the two battery holders are arranged at an interval, the core 100 is located between the two battery holders, and the two ends of the core 100 are limited in the core limiting grooves 141 of the two battery holders, so as to achieve the fixation of the two ends of the core 100, better support and fix the battery, so that it can remain stable in various use environments.

[0053] Furthermore, the battery also includes a top cover 200, which is connected to the end of the battery holder away from the winding core 100, and the battery holder can support the top cover 200 to ensure the stability of the top cover 200. Specifically, the top cover 200 includes a cover plate 210 and a connector 220, the middle of the connector 220 is connected to the side of the cover plate 210 facing the battery holder, and the two ends of the connector 220 are spaced from the cover plate 210, so that the connector 220 forms a bow structure. The width of the connector 220 is smaller than the width of the cover plate 210, so that the third reinforcement 3 and the first support part 13 can abut against the cover plate 210, so that the battery holder can support and fix the top cover, prevent the battery top cover 200 from moving during use, and ensure the stability of the top cover 200. Both ends of the connecting member 220 can extend into the top cover limiting groove 131, the first support portion 13 can limit the movement of the connecting member 220 in the width direction, and the third reinforcement member 3 can limit the movement of the connecting member 3 in the direction away from the battery cell holder, thereby avoiding the top cover 200 and the battery cell holder from separating and falling off, improving the connection strength between the top cover 200 and the battery cell holder, and ensuring the stability of the connection between the top cover 200 and the battery cell holder.

[0054] Furthermore, the top cover 200 also includes a pole 230 and an explosion-proof valve 240. The pole 230 is connected to the middle of the side of the cover plate 210 away from the battery holder, and is used for electrical connection between the inside and outside of the battery. The explosion-proof valve 240 is located at one end of the cover plate 210. When the internal pressure of the battery is too high, the gas inside the battery is discharged through the explosion-proof valve 240 to ensure the safety of the battery.

[0055] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A battery cell bracket, characterized in that, Comprising: A bracket body (1), the bracket body (1) includes a perforated portion (11), a liquid leakage unit (12) and two support structures. The liquid leakage unit (12) penetrates through the perforated portion (11). The middle parts of the two support structures are respectively connected to both sides of the perforated portion (11) in the width direction. The two support structures and the first end face (111) of the perforated portion (11) in the height direction form a top cover limiting groove (131), and the two support structures and the second end face (112) of the perforated portion (11) in the height direction form a core roll limiting groove (141); A strengthening component (2), the strengthening component (2) includes a first strengthening member (21), the first strengthening member (21) is connected to the first end face (111), and the projection of the first strengthening member (21) in the height direction covers a part of the liquid leakage unit (12); And / or, the strengthening component (2) includes a second strengthening member (22), the second strengthening member (22) is connected to the second end face (112), and the projection of the second strengthening member (22) in the height direction covers a part of the liquid leakage unit (12); Wherein, the width direction is perpendicular to the height direction.

2. The cell holder according to claim 1, characterized in that, The liquid leakage unit (12) includes a plurality of liquid leakage holes (121), and the plurality of liquid leakage holes (121) are arranged at intervals in the width direction of the battery cell bracket. A corresponding first strengthening member (21) is arranged above the liquid leakage unit (12), and a corresponding second strengthening member (22) is arranged below the liquid leakage unit (12).

3. The cell holder according to claim 2, wherein Both the liquid leakage unit (12) and the strengthening component (2) are provided in plurality. The plurality of liquid leakage units (12) are arranged at intervals in the length direction of the battery cell bracket, and the plurality of liquid leakage units (12) are arranged in one-to-one correspondence with the plurality of strengthening components (2).

4. The cell support according to claim 1, characterized in that, The support structure includes a first support portion (13), the first support portion (13) is connected to the perforated portion (11) and protrudes from the first end face (111) along the height direction.

5. The cell holder according to claim 4, wherein The battery cell bracket further includes a third strengthening member (3), the third strengthening member (3) is connected to one side of one first support portion (13) facing the other first support portion (13), and the third strengthening member (3) is arranged at an interval from the perforated portion (11).

6. The cell holder according to claim 5, characterized in that, A plurality of the third strengthening members (3) are connected to each first support portion (13), and the plurality of third strengthening members (3) are arranged at intervals in the length direction of the battery cell bracket.

7. The cell support according to claim 5, characterized in that, The perforated portion (11), the two first support portions (13) and the third strengthening member (3) form a top cover limiting groove (131).

8. The cell holder according to claim 1, wherein The support structure further includes a second support portion (14), the second support portion (14) protrudes from the second end face (112) along the height direction, and the perforated portion (11) and the second support portion (14) form a core roll limiting groove (141).

9. The cell holder according to claim 1, characterized in that, The width of the battery cell bracket is D, and the length of the battery cell bracket is L, wherein, L / D < 20.

10. A battery, characterized in that, It comprises a winding core (100), a top cover (200) and a battery cell support according to any one of claims 1 to 7, wherein the winding core (100) is fixed on the battery cell support, and the top cover (200) is connected to an end of the battery cell support facing away from the winding core (100).

Images