Lower plastic cement, cover plate assembly with lower plastic cement and battery monomer

Abstract

The utility model provides a lower plastic, a cover plate assembly with the same and a battery monomer, and the lower plastic comprises a first split part, a second split part, a third split part and a fourth split part, a plurality of clamping grooves are formed in the second split part, the clamping grooves are distributed in the first direction, and the clamping hook can be matched with any clamping groove to adjust the length of the lower plastic. According to the lower plastic provided by the utility model, the plurality of clamping grooves are formed in the second split part, and the clamping hooks are adjusted to be matched with different clamping grooves, so that the lower plastic can be matched with cover plate bodies with different sizes, the universality of the lower plastic can be improved, and meanwhile, the central position of the hole position of the lower plastic can be prevented from deviating; therefore, the lower plastic and the cover plate body can be accurately matched.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell manufacturing, in particular to a lower plastic, a cover plate assembly with the same, and a battery cell. Background Art

[0002] In the existing solution, when the lower plastic is matched with the cover plate assembly, the center of the hole position of the lower plastic is prone to deviation, which affects the installation of the lower plastic and the cover plate body, and makes the lower plastic unable to be accurately matched with the cover plate body. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a lower plastic, which can ensure that the lower plastic and the cover plate body can be accurately matched.

[0004] The utility model also provides a cover plate assembly with the above lower plastic.

[0005] The utility model also provides a battery cell with the above cover plate assembly.

[0006] The lower plastic according to the embodiment of the utility model includes: a first split part, on which a hook is provided; a second split part, on which a slot is provided; the number of the slots is multiple and arranged along a first direction, and the hook can be matched with any one of the slots to adjust the length of the lower plastic.

[0007] For the lower plastic according to the utility model, by arranging a plurality of slots on the second split part and adjusting the cooperation of the hook with different slots, the lower plastic can be adapted to cover plate bodies of different sizes, thereby improving the versatility of the lower plastic. At the same time, the center position of the hole of the lower plastic can be prevented from deviating, so that the lower plastic and the cover plate body can be accurately matched.

[0008] According to some embodiments of the utility model, the hook includes: an elastic part extending along a second direction, one end of the elastic part is connected to the first split part, and the second direction intersects with the first direction; a main body part connected to the other end of the elastic part, the main body part extends towards the second split part along the first direction, and a limiting protrusion is arranged at the end of the main body part far away from the elastic part, and the limiting protrusion extends into the slot.

[0009] According to some optional embodiments of the utility model, the thickness of the main body part in the second direction is greater than or equal to 1.5 mm.

[0010] According to some embodiments of the present utility model, one end of the elastic part connected to the main body part is at least partially formed into an arc protruding towards the inside of the first split part, and the elastic part can elastically deform along the second direction.

[0011] According to some embodiments of the present utility model, one end of the second split part facing the first split part is provided with an explosion-proof valve groove, the clamping groove is arranged on the two side walls of the explosion-proof valve groove in the second direction, one side of the explosion-proof valve groove is open to form an open mouth, and the clamping hook is adapted to pass through the open mouth and cooperate with the clamping groove.

[0012] According to some alternative embodiments of the present utility model, the clamping groove is formed by recessing from the side wall of the explosion-proof valve groove towards the inside of the second split part along the second direction.

[0013] According to some embodiments of the present utility model, the number of the clamping hooks is two, the two clamping hooks are arranged on both sides of the first split part in the second direction, and the two clamping hooks are respectively engaged in the clamping grooves on both sides.

[0014] According to some embodiments of the present utility model, the first split part is an injection molded part, and / or the second split part is an injection molded part.

[0015] The cover plate assembly according to the embodiment of the second aspect of the present utility model includes a cover plate body and a lower plastic according to the first aspect of the present utility model, and the lower plastic is arranged on the cover plate body.

[0016] According to the cover plate assembly of the present utility model, by arranging the lower plastic of the above-mentioned first aspect embodiment, arranging a plurality of clamping grooves on the second split part, and adjusting the cooperation of the clamping hooks with different clamping grooves, the lower plastic can be adapted to cover plate bodies of different sizes, thereby improving the versatility of the lower plastic. At the same time, the central position of the lower plastic hole can be prevented from being offset, so that the lower plastic and the cover plate body can be accurately matched.

[0017] The battery cell according to the embodiment of the third aspect of the present utility model includes the cover plate assembly according to the second aspect of the present utility model.

[0018] According to the cover plate assembly of the present utility model, by arranging the cover plate assembly of the above-mentioned second aspect embodiment, the central position of the lower plastic hole can be prevented from being offset, so that the lower plastic and the cover plate body can be accurately matched.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0020] Figure 1Schematic diagram of a cover plate assembly according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 exploded view of the cover plate assembly shown in;

[0022] Figure 3 is Figure 2 schematic diagram of one angle of the lower plastic shown in;

[0023] Figure 4 is Figure 3 schematic diagram of another angle of the lower plastic shown in;

[0024] Figure 5 is Figure 3 schematic diagram of the first split part shown in;

[0025] Figure 6 is Figure 3 schematic diagram of the second split part shown in.

[0026] Reference numerals:

[0027] 100, lower plastic;

[0028] 10, first split part; 11, hook; 111, elastic part; 112, main body part; 1121, limit projection;

[0029] 20, second split part; 21, card slot; 22, explosion-proof valve slot;

[0030] 200, cover plate body; 210, explosion-proof valve hole; 220, pole column mounting hole;

[0031] 300, upper plastic;

[0032] 400, explosion-proof valve;

[0033] 500, pole column;

[0034] 1000, cover plate assembly. Detailed implementation manners

[0035] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0036] The following refers to the attached Figures 1-6 Describe the lower plastic 100 according to an embodiment of the present utility model.

[0037] Refer to Figure 1, Figure 4 , Figure 5 and Figure 6 , according to the lower plastic part 100 of the embodiment of the present utility model, comprising: a first split part 10 and a second split part 20.

[0038] Specifically, a hook 11 is provided on the first split part 10; a slot 21 is provided on the second split part 20, and the number of slots 21 is multiple and arranged along a first direction (such as Figure 4 the left - right direction shown), that is to say, the number of slots 21 can be two, three, four or more, and the hook 11 can cooperate with any one of the slots 21 to adjust the length of the lower plastic part 100.

[0039] For example, as Figure 1 , Figure 3 , Figure 5 and Figure 6 shown, a slot 21 is provided on the second split part 20, and the number of slots 21 is multiple, and the multiple slots 21 are arranged at intervals along the left - right direction.

[0040] When assembling the lower plastic part 100, first set the first split part 10 on the right side of the second split part 20, then cooperate the hook 11 with the slot 21, and finally adjust the cooperation of the hook 11 with different slots 21 to adjust the length of the lower plastic part 100. At this time, the assembly of the lower plastic part 100 is completed.

[0041] For the lower plastic part 100 of the present utility model, by providing multiple slots 21 on the second split part 20 and adjusting the cooperation of the hook 11 with different slots 21, the length of the lower plastic part 100 can be adjusted, so that the lower plastic part 100 can be adapted to cover plate bodies 200 of different sizes, thereby improving the versatility of the lower plastic part 100. At the same time, when the lower plastic part 100 is matched with the cover plate body 200, the lower plastic part 100 is prone to shrinkage, resulting in the deviation of the center position of the holes on the lower plastic part 100. Therefore, by adjusting the cooperation of the hook 11 with grooves at different positions, the deviation of the center position of the holes on the lower plastic part 100 can be avoided, so that the lower plastic part 100 and the cover plate body 200 can be accurately matched, and the matching accuracy can also be ensured.

[0042] Furthermore, the split - type lower plastic part 100 can facilitate the processing of the lower plastic part 100. At the same time, it can also facilitate the disassembly and installation of the lower plastic part 100, and further facilitate the maintenance and replacement of the lower plastic part 100.

[0043] According to the lower plastic part 100 of the embodiment of the present utility model, a plurality of card slots 21 are arranged on the second split part 20. By adjusting the cooperation between the card hooks 11 and different card slots 21, the lower plastic part 100 can be adapted to cover body parts 200 of different sizes, thereby improving the versatility of the lower plastic part 100. At the same time, the deviation of the center position of the holes of the lower plastic part 100 can be avoided, so that the accurate cooperation between the lower plastic part 100 and the cover body part 200 can be ensured.

[0044] According to some embodiments of the present utility model, referring to Figure 2 , Figure 3 and Figure 5 , the card hook 11 includes: an elastic part 111 and a main body part 112. The elastic part 111 extends along the second direction (such as the front-back direction shown in Figure 5 ), one end of the elastic part 111 is connected to the first split part 10, and the second direction intersects with the first direction; the main body part 112 is connected to the other end of the elastic part 111, and the main body part 112 extends towards the second split part 20 along the first direction (such as the left-right direction shown in Figure 5 ), and a limiting protrusion 1121 is provided at the end of the main body part 112 far from the elastic part 111 (such as the left end of the main body part 112 shown in Figure 5 ), and the limiting protrusion 1121 extends into the card slot 21.

[0045] In this way, the main body part 112 can be connected to the first split part 10 through the elastic part 111, so that the setting of the main body part 112 can be facilitated. At the same time, the setting directions of the elastic part 111 and the main body part 112 are different, so that the occupied space of the card hook 11 in the first direction can be reduced, and further the volume of the first split part 10 can be reduced. Moreover, the limiting protrusion 1121 on the elastic part 111 can ensure the stability of the cooperation between the card hook 11 and the card slot 21, so that the separation of the first split part 10 and the second split part 20 can be prevented.

[0046] For example, as shown in Figure 2 , Figure 3 and Figure 5 , one end of the elastic part 111 is connected to the first split part 10, the other end of the elastic part 111 extends towards the inside of the first split part 10 along the front-back direction, the main body part 112 extends along the left-right direction, the right end of the main body part 112 is connected to the elastic part 111, the left end of the main body part 112 extends leftward, and a limiting protrusion 1121 is formed at the left end of the main body part 112.

[0047] According to some alternative embodiments of the present utility model, referring to Figure 3 , Figure 4 and Figure 5 , the main body part 112 is in the second direction (such as Figure 5The thickness in the front - rear direction (as shown) is greater than or equal to 1.5 mm. Thus, the structural strength of the main body portion 112 can be ensured, thereby preventing the main body portion 112 from being damaged, and further ensuring the reliability of the cooperation between the hook 11 and the slot 21.

[0048] For example, as Figure 3 , Figure 4 and Figure 5 shown, the thickness of the main body portion 112 in the front - rear direction can be 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

[0049] According to some alternative embodiments of the present utility model, referring to Figure 3 , Figure 4 and Figure 5 , the limiting protrusion 1121 protrudes in the second direction (such as the front - rear direction as shown in Figure 5 ) away from the main body portion 112. Thus, the setting position of the limiting protrusion 1121 is reasonable, so that it can be ensured that the hook 11 can cooperate with the slot 21 through the limiting protrusion 1121.

[0050] For example, as Figure 3 , Figure 4 and Figure 5 shown, the limiting protrusion 1121 extends in the left - right direction. Taking the front hook 11 on the first split part 10 as an example, the limiting protrusion 1121 of the front hook 11 protrudes forward.

[0051] According to some embodiments of the present utility model, referring to Figure 3 , Figure 4 and Figure 5 , one end of the elastic portion 111 connected to the main body portion 112 is at least partially formed into an arc protruding towards the inside of the first split part 10, and the elastic portion 111 can elastically deform in the second direction (such as the front - rear direction as shown in Figure 5 ). Thus, by defining the structural form of the elastic portion 111, it can be ensured that the elastic portion 111 can deform normally. When the hook 11 and the slot 21 are installed and disassembled, it is convenient for the hook 11 to cooperate with the slot 21, and further the assembly efficiency of the lower plastic 100 can be improved.

[0052] For example, as Figure 3 , Figure 4 and Figure 5 shown, taking the front hook 11 on the first split part 10 as an example, one end of the elastic portion 111 connected to the main body portion 112 is formed into an arc protruding towards the rear side, and the elastic portion 111 can deform in the front - rear direction.

[0053] When fitting the hook 11 of the first split part 10 with the slot 21 of the second split part 20, taking the hook 11 on the front side of the first split part 10 as an example, press the elastic part 111 backward, and the elastic part 111 drives the main body part 112 to move backward. At this time, adjust the distance between the first split part 10 and the second split part 20 until the length of the lower plastic 100 is adapted to the cover plate. Then release the elastic part 111, and the elastic part 111 drives the main body part 112 to move from back to front until the limit protrusion 1121 of the main body part 112 extends into the slot 21. At this time, the fitting of the hook 11 of the first split part 10 with the slot 21 of the second split part 20 is completed. When disassembling the hook 11 of the first split part 10 and the slot 21 of the second split part 20, repeat the above steps in reverse.

[0054] According to some embodiments of the present invention, referring to Figure 3 、 Figure 4 and Figure 6 , one end of the second split part 20 facing the first split part 10 (such as Figure 6 shown as the right end of the first split part 10) is provided with an explosion-proof valve groove 22, and the slot 21 is arranged on the side walls of the explosion-proof valve groove 22 in the second direction (such as Figure 6 shown as the front-back direction). One side of the explosion-proof valve groove 22 (such as Figure 6 shown as the right side of the explosion-proof valve groove) is open to form an open mouth, and the hook 11 is adapted to pass through the open mouth and cooperate with the slot 21.

[0055] In this way, setting the explosion-proof valve groove 22 facilitates the setting of the explosion-proof valve 400, thereby ensuring the safety of the battery cell during use. At the same time, the open mouth can facilitate the hook 11 to extend into the explosion-proof valve groove 22 and cooperate with the slot 21, thus facilitating the assembly of the first split part 10 and the second split part 20. Moreover, the slot 21 is arranged on the side wall of the explosion-proof valve groove 22, which can improve the functional integration degree of the explosion-proof valve groove 22 and reduce the volume of the second split part 20.

[0056] For example, as Figure 3 、 Figure 4 and Figure 6 shown, the right end of the second split part 20 is provided with an explosion-proof valve groove 22, and the explosion-proof valve groove 22 is formed by recessing downward from the upper surface of the second split part 20. The explosion-proof valve groove 22 penetrates through the right side edge of the second split part 20, and the slot 21 is arranged on the side walls on the front and back sides of the explosion-proof valve groove 22.

[0057] According to some alternative embodiments of the present invention, referring to Figure 4 and Figure 6 , the slot 21 extends along the second direction (such as Figure 6formed by being recessed toward the inside of the second component 20 in the front-rear direction (the front-rear direction shown). Thus, the card slot 21 will not affect the release of gas from the battery cell in the explosion-proof valve groove 22, thereby ensuring the safe use of the battery cell.

[0058] For example, as Figure 4 and Figure 6 shown, the card slot 21 on the front side wall of the explosion-proof valve groove 22 is formed by being recessed forward from the rear side wall of the front side wall of the explosion-proof valve groove 22, and the card slot 21 on the rear side wall of the explosion-proof valve groove 22 is formed by being recessed backward from the front side wall of the rear side wall of the explosion-proof valve groove 22.

[0059] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 , the number of the hooks 11 is two, and the two hooks 11 are provided on both sides of the first component 10 in the second direction (such as Figure 5 the front-rear direction shown), and the two hooks 11 are respectively engaged in the card slots 21 on both sides. Thus, the two hooks 11 are engaged in the two card slots 21, thereby ensuring the stability of the cooperation between the first component 10 and the second component 20, preventing the separation of the first component 10 and the second component 20, and further ensuring the structural strength of the lower plastic 100.

[0060] For example, as Figure 4 and Figure 5 shown, the front and rear ends of the left side of the first component 10 are both provided with hooks 11, the front hook 11 is engaged in the front card slot 21, and the rear hook 11 is engaged in the rear card slot 21.

[0061] According to some embodiments of the present invention, referring to Figure 5 and Figure 6 , the first component 10 is an injection molded part, and / or the second component 20 is an injection molded part. Thus, the injection molded part can achieve rapid mass production, ensuring the production efficiency of the first component 10 and the second component 20. At the same time, the injection molded part is light in weight, reducing the weight of the battery cell. Moreover, the injection molded part has high precision and strong reliability, facilitating the use of the first component 10 and the second component 20.

[0062] According to the cover plate assembly 1000 of the second aspect embodiment of the present invention, referring to Figure 1 , it includes: a cover plate body 200 and the lower plastic 100 of the first aspect of this embodiment, and the lower plastic 100 is provided on the cover plate body 200.

[0063] According to the cover plate assembly 1000 of the embodiment of the present utility model, by providing the lower plastic 100 of the first aspect embodiment, a plurality of card slots 21 are provided on the second split member 20. By adjusting the engagement of the card hooks 11 with different card slots 21, the lower plastic 100 can be adapted to cover plate bodies 200 of different sizes, thereby improving the versatility of the lower plastic 100. At the same time, the central position of the holes of the lower plastic 100 can be prevented from being displaced, so that the lower plastic 100 and the cover plate body 200 can be accurately matched.

[0064] According to the battery cell of the third aspect embodiment of the present utility model, referring to Figure 1 , it includes the cover plate assembly 1000 of the second aspect of this embodiment.

[0065] According to the battery cell of the embodiment of the present utility model, by providing the cover plate assembly 1000 of the second aspect embodiment, the central position of the holes of the lower plastic 100 can be prevented from being displaced, so that the lower plastic 100 and the cover plate body 200 can be accurately matched.

[0066] Furthermore, as Figure 1 and Figure 2 shown, the battery cell further includes: an upper plastic 300, an explosion-proof valve 400, and a pole column 500. An explosion-proof valve hole 210 is provided on the cover plate body 200. The explosion-proof valve hole 210 and the explosion-proof valve groove 22 are directly opposite in the up-down direction. The explosion-proof valve 400 is covered on the explosion-proof valve hole 210. A pole column mounting hole 220 is provided on the cover plate body 200. The pole column 500 is inserted through the pole column mounting hole 220. The upper plastic 300 is provided on the upper side of the cover plate body 200, and the upper end of the pole column 500 passes through the upper plastic 300.

[0067] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0069] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. 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, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal connection of two components or the interaction relationship between two components. 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 circumstances.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0071] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A lower plastic (100), characterized in that: include: A first split component (10), wherein the first split component (10) is provided with a hook (11); The second split component (20) is provided with a card slot (21), the card slots (21) are multiple in number and arranged along the first direction, and the hook (11) can cooperate with any of the card slots (21) to adjust the length of the lower plastic (100).

2. The lower plastic (100) according to claim 1, characterized in that: The hook (11) comprises: an elastic portion (111), the elastic portion (111) extending along a second direction, one end of the elastic portion (111) being connected to the first split component (10), and the second direction intersecting with the first direction; A main body (112), the main body (112) being connected to the other end of the elastic part (111), the main body (112) extending along a first direction toward the second split part (20), and a limiting protrusion (1121) being provided at one end of the main body (112) away from the elastic part (111), the limiting protrusion (1121) extending into the card slot (21).

3. The lower plastic (100) according to claim 2, characterized in that: The thickness of the main body (112) in the second direction is greater than or equal to 1.5 mm.

4. The lower plastic (100) according to claim 2, characterized in that: One end of the elastic portion (111) connected to the main body portion (112) is at least partially formed into an arc shape protruding toward the inside of the first split component (10), and the elastic portion (111) can be elastically deformed along the second direction.

5. The lower plastic (100) according to claim 1, characterized in that: An explosion-proof valve groove (22) is provided at one end of the second split component (20) facing the first split component (10); the clamping groove (21) is provided on two side walls of the explosion-proof valve groove (22) in the second direction; one side of the explosion-proof valve groove (22) is opened to form an open opening; the clamping hook (11) is suitable for passing through the open opening to cooperate with the clamping groove (21).

6. The lower plastic (100) according to claim 5, characterized in that: The clamping groove (21) is formed by being recessed from the side wall of the explosion-proof valve groove (22) along a second direction toward the interior of the second split component (20).

7. The lower plastic (100) according to claim 5, characterized in that: The number of the hooks (11) is two, and the two hooks (11) are arranged on both sides of the first split component (10) in the second direction, and the two hooks (11) are respectively matched in the slots (21) on both sides.

8. The lower plastic (100) according to claim 1, characterized in that: The first split component (10) is an injection molded component, and / or the second split component (20) is an injection molded component.

9. A cover plate assembly (1000), characterized in that: include: A cover plate body (200) and the lower plastic (100) according to any one of claims 1 to 8, wherein the lower plastic (100) is arranged on the cover plate body (200).

10. A battery cell, characterized in that: The invention comprises the cover plate assembly (1000) as claimed in claim 9.

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