Shell assembly and battery

Abstract

The utility model discloses a shell assembly and a battery, and belongs to the technical field of batteries. The shell assembly comprises a shell, a buckle, a first plastic part and a second plastic part, the shell comprises a side plate, and the side plate is provided with a through hole; the first plastic part is arranged outside the shell, the second plastic part is arranged inside the shell, and the first plastic part and the second plastic part are arranged on the two sides of the side plate. The buckle is arranged in the through hole in a penetrating mode, one end of the buckle is fixedly arranged on one of the first plastic part and the second plastic part, and the other end of the buckle is connected to the other one of the first plastic part and the second plastic part in a clamped mode. The battery comprises a battery cell and a shell assembly, wherein the battery cell is accommodated in a shell of the shell assembly. According to the shell assembly and the battery disclosed by the utility model, the assembly difficulty is reduced, and the connection reliability is high.

Description

Technical Field

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

[0002] In related technologies, such as Figure 1 As shown, the battery includes a cover assembly 1', a shell, a battery cell, a tab and a pole 2', etc. The cover assembly 1' includes a cover 11', a first plastic part 12' and a second plastic part 13'. The first plastic part 12' and the second plastic part 13' are arranged on both sides of the cover 11', the cover assembly 1' is covered on the shell, the pole 2' and the cover assembly 1', the tab connects the battery cell and the pole 2', the battery cell, the tab, the second plastic part 13' and part of the pole 2' are all arranged in the shell, the second plastic part 13' is used to isolate the battery cell, the tab and the pole 2' from the cover 11', and the first plastic part 12' is used to isolate the pole 2' from the cover 11'. The first plastic part 12 ′ and the second plastic part 13 ′ are respectively injection-molded with the cover plate 11 ′, and the assembly of the cover plate assembly 1 ′ is relatively difficult, thereby increasing the difficulty of assembling the housing assembly and the battery. Utility Model Content

[0003] The purpose of the utility model is to provide a housing assembly and a battery, which reduce the difficulty of assembly and have high connection reliability.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] In one aspect, a housing assembly is provided, comprising:

[0006] A housing, the housing comprising a side panel, the side panel being provided with a through hole;

[0007] a first plastic part and a second plastic part, wherein the first plastic part is arranged outside the shell, the second plastic part is arranged inside the shell, and the first plastic part and the second plastic part are arranged on both sides of the side panel;

[0008] A buckle is passed through the through hole, one end of the buckle is fixed to one of the first plastic part and the second plastic part, and the other end is clamped to the other of the first plastic part and the second plastic part.

[0009] In some possible embodiments, the buckle includes a hook, which includes a rod and a hook connected to one side of the rod, the first plastic part or the second plastic part is provided with a bayonet, the rod is passed through the bayonet, and the hook is hooked to the edge surface of the bayonet.

[0010] In some possible implementations, the first plastic part or the second plastic part is provided with a slot, the slot and the opening form a step surface, and the hook portion is hooked on the step surface.

[0011] In some possible implementations, the buckle includes one hook; or, the buckle includes two hooks, and the two hooks face each other; or, the buckle includes two hooks, and the two hooks face away from each other.

[0012] In some possible implementations, a guide surface is provided on a side of the hook portion facing away from the rod portion.

[0013] In some possible implementations, the number of the buckle is at least one.

[0014] In some possible implementations, the side panel is provided with a first receiving groove, and the first plastic part is received in the first receiving groove; and / or the first plastic part is provided with a second receiving groove, and the second receiving groove is used to receive the pole.

[0015] In some possible embodiments, the shell is used to accommodate a battery cell, the battery cell is provided with a tab, the side panel faces the tab, the first plastic part, the side panel and the second plastic part are formed with a through hole, and the tab passes through the through hole to extend outside the shell.

[0016] In some possible implementations, the through hole and the through hole are connected.

[0017] On the other hand, a battery is provided, comprising a battery cell and a shell assembly as described in any one of the above items, wherein the battery cell is accommodated in an outer shell of the shell assembly.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a housing assembly and battery that, by providing a snap fastener, can simultaneously assemble a first plastic part, a side panel, and a second plastic part, simplifying assembly steps and improving assembly efficiency. Furthermore, the detachable connection facilitates assembly and disassembly, reducing assembly difficulty. One end of the snap fastener is fixedly connected to the second plastic part or the first plastic part, while the other end is clipped to the first plastic part or the second plastic part. The side panel is sandwiched between the first and second plastic parts, achieving axial positioning of the first, side panels, and second plastic parts, preventing the structure from falling off and improving connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a cover plate assembly and a pole in the prior art;

[0021] Figure 2 is a schematic diagram of a housing assembly provided by a specific embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 The enlarged view of M;

[0023] Figure 4It is an exploded view of a housing assembly provided in a specific embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of a first type of buckle provided in a specific embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of a second buckle provided in a specific embodiment of the present utility model;

[0026] Figure 7 It is a schematic diagram of a third buckle provided in a specific embodiment of the present utility model.

[0027] In the picture:

[0028] 1', cover plate assembly; 2', pole; 11', cover plate; 12', first plastic part; 13', second plastic part;

[0029] 1. Housing; 11. Side panel; 111. Liquid injection hole; 112. First receiving groove; 113. First communication hole;

[0030] 2. First plastic part; 21. Flange edge; 22. Second communication hole; 23. Bayonet; 24. Card slot; 25. Second receiving slot;

[0031] 3. Second plastic part; 31. Third connecting hole; 32. Protrusion; 33. First avoidance hole; 34. Second avoidance hole;

[0032] 4. Buckle; 41. Hook; 411. Rod; 412. Hook; 4121. Guide surface;

[0033] 5. Explosion-proof valve;

[0034] V. Through hole. DETAILED DESCRIPTION

[0035] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0036] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] like Figure 2-Figure 7 As shown, this embodiment provides a housing assembly comprising a housing 1, a buckle 4, a first plastic part 2, and a second plastic part 3. The housing 1 includes a side panel 11, which is provided with a through hole. The first plastic part 2 is disposed outside the housing 1, and the second plastic part 3 is disposed inside the housing 1. The first and second plastic parts 2 and 3 are disposed on either side of the side panel 11. The buckle 4 is disposed through the through hole. One end of the buckle 4 is fixed to one of the first and second plastic parts 2 and 3, and the other end is engaged with the other of the first and second plastic parts 2 and 3.

[0039] In the first embodiment, the buckle 4 is integrally connected to the first plastic part 2, passes through the side panel 11, and is engaged with the second plastic part 3. In the second embodiment, the buckle 4 is integrally connected to the second plastic part 3, passes through the side panel 11, and is engaged with the first plastic part 2. In the third embodiment, there is at least one buckle 4. By increasing the number of buckles 4, the connection reliability of the first plastic part 2 and the second plastic part 3 can be improved, thereby improving the reliability of the connection between the first plastic part 2 and the second plastic part 3 and the side panel 11. When multiple buckles 4 are provided, some buckles 4 are integrally connected to the first plastic part 2 and engaged with the second plastic part 3, while other buckles 4 are integrally connected to the second plastic part 3 and engaged with the first plastic part 2, which is a combination of the first and second embodiments. Through the above structure, the first plastic part 2, the side panel 11, and the second plastic part 3 can be assembled at one time, simplifying the assembly steps and improving assembly efficiency. The detachable connection facilitates disassembly and assembly, reducing assembly difficulty. One end of the clip 4 is fixedly connected to the second plastic part 3 or the first plastic part 2, and the other end is clipped to the first plastic part 2 or the second plastic part 3. The side plate 11 is clamped between the first plastic part 2 and the second plastic part 3, thereby realizing axial limitation of the first plastic part 2, the side plate 11 and the second plastic part 3, preventing the structure from falling off, and improving the connection reliability.

[0040] Illustratively, the buckle 4 includes a hook 41, which is L-shaped and includes a rod 411 and a hook 412 connected to one side of the rod 411. The first plastic part 2 or the second plastic part 3 is provided with a bayonet 23, the rod 411 is inserted into the bayonet 23, and the hook 412 engages with the edge surface of the bayonet 23. This simple structure facilitates installation. Furthermore, the hook 412 is provided with a guide surface 4121 on the side facing away from the rod 411, further facilitating the insertion of the buckle 4 through the bayonet 23 for engagement. The first plastic part 2 or the second plastic part 3 is provided with a slot 24, which forms a stepped surface with the slot 23. The hook 412 engages with the stepped surface to prevent the buckle 4 from protruding and interfering with other components, thereby reducing the structural bulk. The buckle 4 includes a hook 41; or, the buckle 4 includes two hooks 41, and the two hook portions 412 face each other; or, the buckle 4 includes two hooks 41, and the two hook portions 412 face away from each other. Accordingly, the bayonet 23 and the slot 24 are adapted to the shape of the buckle 4 and are not limited.

[0041] The outer shell 1 is used to accommodate the battery cell, which is provided with a tab. The side panel 11 faces the tab. The first plastic part 2, the side panel 11 and the second plastic part 3 are formed with a through hole V. The tab passes through the through hole V to extend out of the outer shell 1 and is folded over the first plastic part 2, which can improve space utilization.

[0042] The outer shell 1 is used to accommodate the battery cell, which is provided with a tab. The side panel 11 faces the tab. The first plastic part 2, the side panel 11 and the second plastic part 3 are provided with a through hole V. The tab passes through the through hole V to extend outside the outer shell 1 to connect with the external pole. The pole and part of the tab are all provided outside the outer shell 1, which can improve the utilization rate of the internal space of the battery.

[0043] The battery cell is provided with two tabs, namely a positive tab and a negative tab. The two tabs are located on the same side of the battery cell. Two first plastic parts 2 and two second plastic parts 3 are provided respectively. The two tabs are arranged corresponding to the two first plastic parts 2, and the two tabs are arranged corresponding to the two second plastic parts 3. The two first plastic parts 2 are an integral structure or a split structure, and the two second plastic parts 3 are an integral structure or a split structure. The integral structure can reduce the assembly steps, and the split structure is more flexible and can be set according to actual needs without limitation. The number of through holes V corresponding to each tab is greater than or equal to 1. By increasing the number of through holes V, the tab passes through multiple through holes V, which facilitates the tab to pass through. When positive and negative tabs are provided, the number of through holes V corresponding to the positive tab is greater than or equal to 1, and the number of through holes V corresponding to the negative tab is greater than or equal to 1. The number of through holes V corresponding to the two can be equal or different. Optionally, there are two through holes V corresponding to each tab, and the connecting column is provided between two adjacent through holes V. The structure is subjected to uniform force, and the tabs are folded toward each other or away from each other from the two through holes V without overlapping each other, thereby further reducing the height.

[0044] Specifically, the side panel 11 is provided with a first connecting hole 113, the first plastic part 2 is provided with a second connecting hole 22, and the second plastic part 3 is provided with a third connecting hole 31. The first connecting hole 113, the second connecting hole 22 and the third connecting hole 31 are connected to form a through hole V. Furthermore, the three are arranged opposite each other.

[0045] Optionally, the second plastic part 3 is provided with a protrusion 32, and the third communication hole 31 is provided on the protrusion 32. The protrusion 32 extends into the first communication hole 113, thereby isolating the side plate 11 from the tab. Optionally, the second plastic part 3 is plate-shaped, which reduces the internal space occupied by the second plastic part 3 in the housing 1, thereby improving the internal space utilization of the battery, increasing the battery capacity, and increasing the volume of the interstitial battery.

[0046] Optionally, the shell 1 , i.e. the side plate 11 , may be provided with an explosion-proof valve 5 , and the notch on the explosion-proof valve 5 may face the inside or the outside of the shell 1 , or the explosion-proof valve 5 may not be provided.

[0047] Optionally, the housing 1 , i.e., the side plate 11 , may or may not be provided with a liquid injection hole 111 . If a liquid injection hole 111 is provided, it may be provided in the middle or close to one side of the positive electrode or the negative electrode.

[0048] When the second plastic part 3 is an integral structure, the second plastic part 3 has a corresponding first avoidance hole 33 to avoid the explosion-proof valve 5 and the injection hole 111. When the first plastic part 2 is an integral structure, the first plastic part 2 has a corresponding second avoidance hole 34 to avoid the explosion-proof valve 5 and the injection hole 111.

[0049] The through hole and the through hole V are connected, which simplifies the structure, facilitates the processing of the side plate 11, and reduces the processing steps.

[0050] The side panel 11 is provided with a first receiving groove 112, within which the first plastic part 2 is received. This reduces the overall thickness of the side panel 11 and the first plastic part 2, further reducing the overall volume and overall structural volume. The first plastic part 2 is provided with a second receiving groove 25, which is used to accommodate the terminal post, thereby reducing the structural volume. The bottom height of the second receiving groove 25 ranges from 1 mm below the surface of the side panel 11 to 0.5H above the surface of the side panel 11, where H represents the thickness of the side panel 11. The terminal post is provided on the first plastic part 2 for connection with the terminal tab. Optionally, the distance between the surface of the first plastic part 2 for mounting the terminal post and the upper surface of the housing 11 is between -1 and 0.5H, where H represents the thickness of the side panel 11 or the housing 1, and can specifically be -1, 0, or 0.5H. When H is a negative value, the surface of the first plastic part 2 for mounting the terminal post is lower than the upper surface of the housing 1. When H is a positive value, the surface of the first plastic part 2 for mounting the terminal post is higher than the upper surface of the housing 1. A value that is too large is not conducive to improving volume utilization, while a value that is too small reduces the strength of the housing 1.

[0051] The first plastic part 2 is provided with a flange 21 on its periphery. The width of flange 21 is L1, and the range of L1 is 0-10mm. Specifically, L1 can be 0, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. A value of 0 indicates that flange 21 is not provided. Excessively wide flange 21 increases the weight, material, and cost of the housing assembly. A gap is provided between the outer periphery of flange 21 and the wall of the receiving groove to facilitate assembly.

[0052] This embodiment further provides a battery comprising a battery cell and the above-described housing assembly, wherein the battery cell is housed within a housing 1 of the housing assembly. Optionally, the bottom of the housing 1 is open, and after the battery cell, second plastic part 3, and other related structures are installed, a cover plate is welded to the housing 1 to seal the opening.

[0053] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A housing assembly, characterized in that: include: A housing (1), the housing (1) comprising a side plate (11), the side plate (11) being provided with a through hole; a first plastic part (2) and a second plastic part (3), wherein the first plastic part (2) is arranged outside the housing (1), and the second plastic part (3) is arranged inside the housing (1), and the first plastic part (2) and the second plastic part (3) are arranged on both sides of the side panel (11); A buckle (4), the buckle (4) is passed through the through hole, one end of the buckle (4) is fixed to one of the first plastic part (2) and the second plastic part (3), and the other end is clamped to the other of the first plastic part (2) and the second plastic part (3).

2. The housing assembly according to claim 1, wherein: The buckle (4) includes a hook (41), and the hook (41) includes a rod (411) and a hook (412) connected to one side of the rod (411). The first plastic part (2) or the second plastic part (3) is provided with a bayonet (23), the rod (411) is passed through the bayonet (23), and the hook (412) is hooked to the edge surface of the bayonet (23).

3. The housing assembly according to claim 2, wherein: The first plastic part (2) or the second plastic part (3) is provided with a slot (24), the slot (24) and the bayonet (23) form a step surface, and the hook portion (412) is hooked on the step surface.

4. The housing assembly according to claim 2, wherein: The buckle (4) includes one hook (41); or, the buckle (4) includes two hooks (41), and the two hook portions (412) face each other; or, the buckle (4) includes two hooks (41), and the two hook portions (412) face away from each other.

5. The housing assembly according to claim 2, wherein: A guide surface (4121) is provided on a side of the hook portion (412) facing away from the rod portion (411).

6. The housing assembly according to claim 1, wherein: The number of the buckle (4) is at least one.

7. The housing assembly according to claim 1, wherein: The side plate (11) is provided with a first receiving groove (112), and the first plastic part (2) is received in the first receiving groove (112); and / or the first plastic part (2) is provided with a second receiving groove (25), and the second receiving groove (25) is used to receive the pole.

8. The housing assembly according to any one of claims 1 to 7, characterized in that: The housing (1) is used to accommodate a battery cell, the battery cell is provided with a tab, the side plate (11) faces the tab, the first plastic part (2), the side plate (11) and the second plastic part (3) are formed with a through hole (V), and the tab passes through the through hole (V) to extend outside the housing (1).

9. The housing assembly according to claim 8, wherein: The through hole is connected to the through hole (V).

10. A battery, characterized in that: The invention comprises a battery core and a shell assembly according to any one of claims 1 to 9, wherein the battery core is accommodated in a shell (1) of the shell assembly.

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