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 first plastic part and a buckle, the shell is used for accommodating a battery cell, the battery cell is connected with a tab, the shell comprises a side plate, and the tab faces the side plate; the first plastic part is arranged on the outer side of the shell, through holes are formed in the first plastic part and the side plates, and the pole lugs can penetrate through the through holes to be connected with the pole columns; and the first plastic part is clamped on the side plate through the buckle. The battery comprises a battery cell, a pole, a tab and the shell assembly, the battery cell is contained in the shell, the tab is connected with the battery cell, the tab penetrates through the through hole, and the pole is arranged outside the shell and connected with the tab. According to the shell assembly and the battery, through the through holes formed in the first plastic part and the side plates, the tabs can penetrate through the through holes, the tabs can be connected with the polar columns located outside the shell, the polar columns and part of the tabs are all arranged outside the shell assembly, and the situation that the internal space of the shell assembly is occupied is avoided; and the internal space utilization rate of the shell assembly is improved.

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 and Figure 2 As shown, the battery includes a cover assembly 1', a shell 3', a battery cell 4', a tab 5' and a pole 2', etc. The cover assembly 1' includes a cover 11' and a plastic part 12'. The plastic part 12' is arranged on the outside of the cover 11', the cover assembly 1' is covered on the shell 3', the pole 2' passes through the cover assembly 1', the tab 5' connects the battery cell 4' and the pole 2', the battery cell 4', the tab 5' and part of the pole 2' are all arranged in the shell 3', the plastic part 12' is used to isolate the pole 2' from the cover 11', and the internal space utilization rate of the shell 3' is low. Utility Model Content

[0003] The purpose of the utility model is to provide a shell assembly and a battery, so as to improve the internal space utilization of the battery.

[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 for accommodating a battery cell, wherein the battery cell is connected to a tab, the housing including a side plate, and the tab facing the side plate;

[0007] a first plastic part, the first plastic part being arranged on the outer side of the housing, the first plastic part and the side plate being provided with through holes, the tabs being able to pass through the through holes to be connected to the poles;

[0008] Buckle, the first plastic part is connected to the side panel via the buckle.

[0009] In some possible implementations, a tab is provided on a side of the battery cell facing the first plastic part, and the number of the through holes is not less than 1; or

[0010] A positive electrode tab and a negative electrode tab are provided on the side of the battery cell facing the first plastic part. The through-holes include a first through-hole and a second through-hole. The positive electrode tab passes through the first through-hole and the negative electrode tab passes through the second through-hole. The number of the first through-hole and the second through-hole is not less than 1.

[0011] In some possible implementations, the battery cell is provided with a positive electrode tab and a negative electrode tab on a side facing the first plastic part, and the first plastic part is provided with the first through hole and the second through hole; or

[0012] The side of the electric core towards the first plastic part is provided with a positive electrode lug and a negative electrode lug, the first plastic part is provided with two, one of the first plastic parts is provided with the first through hole, and the other of the first plastic parts is provided with the second through hole.

[0013] In some possible implementation manners, the side plate is provided with a first receiving groove, and a groove opening of the first receiving groove faces the outside, and the first plastic part is accommodated in the first receiving groove.

[0014] In some possible implementation manners, the first plastic part is provided with a flange, and a width of the flange is greater than 0 and less than or equal to 10 mm.

[0015] In some possible implementation manners, the first plastic part is provided with a second receiving groove, and the second receiving groove is used for accommodating a pole.

[0016] In some possible implementation manners, the through hole is provided with two, and the second receiving groove is arranged between the two through holes.

[0017] In some possible implementation manners, the buckle is integrally connected to a bottom surface of the first plastic part, the side plate is provided with a clamping hole, the clamping hole is a stepped hole, and when the buckle is clamped in the clamping hole, the end of the buckle is clamped on a stepped surface of the stepped hole, so that the end of the buckle does not protrude from an inner surface of the side plate; and / or

[0018] The buckle is integrally connected to an outer surface of the side plate, the first plastic part is provided with a clamping hole, the clamping hole is a stepped hole, and when the buckle is clamped in the clamping hole, the end of the buckle is clamped on a stepped surface of the stepped hole, so that the end of the buckle does not protrude from a top surface of the first plastic part.

[0019] In some possible implementation manners, a second plastic part arranged in the shell is further included, the second plastic part and the first plastic part are arranged on two sides of the side plate, and the second plastic part is inserted into the side plate.

[0020] In another aspect, a battery is provided, including an electric core, a pole, an electrode lug and the shell assembly as claimed in any one of the above, the electric core is accommodated in the shell, the electrode lug is connected with the electric core, the electrode lug passes through the through hole, and the pole is arranged outside the shell and connected with the electrode lug.

[0021] The battery has the following beneficial effects:

[0022] The shell assembly and the battery provided by the utility model have the advantages that the through holes are arranged in the first plastic part and the side plate, the tab can pass through the through hole, the tab can be connected with the pole located outside the shell, the pole and part of the tab are arranged outside the shell assembly, the internal space of the shell assembly is avoided from being occupied, and the utilization rate of the internal space of the shell assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Yes, the sectional view of the battery in the prior art;

[0024] Figure 2 Yes Figure 1 The enlarged view of M of

[0025] Figure 3 Yes

[0026] Figure 4 Yes

[0027] Figure 5 Yes

[0028] Figure 6 Yes

[0029] Figure 7 Yes Figure 6 The enlarged view of N of

[0030] In the drawing:

[0031] 1', cover plate assembly; 2', pole; 3', shell; 4', battery core; 5', tab; 11', cover plate; 12', plastic part;

[0032] 1, shell; 11, side plate; 111, clamping hole; 112, first containing groove; 113, liquid injection port;

[0033] 2, first plastic part; 21, flange; 22, second containing groove;

[0034] 3, second plastic part; 31, insertion column;

[0035] 4, buckle;

[0036] 5, explosion-proof valve;

[0037] V, through hole; V1, first through hole; V2, second through hole. DETAILED DESCRIPTION

[0038] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model embodiments will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0039] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless explicitly defined and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or it can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] As Figures 3-7As shown, the embodiment provides a shell assembly, which comprises a shell 1, a first plastic part 2 and a buckle 4. The shell 1 is used to accommodate a battery cell, the battery cell is connected with a tab, and the shell 1 comprises a side plate 11, and the tab faces the side plate 11. The first plastic part 2 is arranged outside the shell 1, and the first plastic part 2 and the side plate 11 are provided with a through hole V, and the tab can pass through the through hole V to be connected with a pole. The first plastic part 2 is clamped on the side plate 11 by the buckle 4. The embodiment also provides a battery, which comprises a battery cell, a pole, a tab and the above shell assembly. The battery cell is accommodated in the shell 1, the tab is connected with the battery cell, the tab passes through the through hole V, and the pole is arranged outside the shell 1 and connected with the tab. The through hole V is arranged on the first plastic part 2 and the side plate 11, so that the tab can pass through the through hole V, the tab can be connected with the pole arranged outside the shell 1, the pole and part of the tab are arranged outside the shell assembly, the internal space of the shell assembly is avoided to be occupied, and the utilization rate of the internal space of the shell assembly is improved. Specifically, the tab is folded above the first plastic part 2 after extending out of the through hole V to be welded with the pole, the first plastic part 2 and the side plate 11 are clamped by the buckle 4, the assembly difficulty can be reduced.

[0042] In the first embodiment, the buckle 4 is integrally connected to the bottom surface of the first plastic part 2, the side plate 11 is provided with a clamping hole 111, the clamping hole 111 is a stepped hole, and the buckle 4 is clamped on the stepped surface of the stepped hole when clamped in the clamping hole 111, so that the end of the buckle 4 does not protrude from the inner surface of the side plate 11, preventing the buckle 4 from protruding from the side plate 11 to cause structural interference with other structures. Specifically, the buckle 4 comprises a clamping hook, and the clamping hook is engaged with the stepped surface of the side plate 11.

[0043] In the second embodiment, the buckle 4 is integrally connected to the outer surface of the side plate 11, and the first plastic part 2 is provided with a clamping hole 111, which is a stepped hole. When the buckle 4 is clamped in the clamping hole 111, it is clamped on the stepped surface of the stepped hole, so that the end of the buckle 4 does not protrude from the top surface of the first plastic part 2, preventing the buckle 4 from protruding from the first plastic part 2 to cause structural interference with other structures.

[0044] In the third embodiment, a plurality of buckles 4 are provided, part of the buckles 4 are integrally connected to the bottom surface of the first plastic part 2 and clamped in the side plate 11, and the other part of the buckles 4 are integrally connected to the side plate 11 and clamped in the first plastic part 2. That is, the third embodiment is a combination of the first embodiment and the second embodiment, and will not be described in detail.

[0045] Optionally, the buckle 4 is provided with one clamping hook, and the buckle 4 is provided with one or two clamping hooks. The clamping hooks of the two buckles 4 face or are away from each other, and the clamping hole 111 is provided with a stepped surface matched with the buckle 4.

[0046] In one embodiment, the side of the battery cell facing the first plastic part 2 is provided with one tab, and the number of through holes V is not less than 1. In another embodiment, the side of the battery cell facing the first plastic part 2 is provided with a positive tab and a negative tab, and the through holes V include first through holes V1 and second through holes V2, the positive tab passes through the first through holes V1, and the negative tab passes through the second through holes V2, and the number of first through holes V1 and second through holes V2 is not less than 1. By increasing the number of through holes V corresponding to the tab, the tab extends out through different through holes V, and by increasing the number of through holes V, the tab extends out through multiple through holes V, which facilitates the tab to extend out and facilitates assembly. Optionally, two through holes V corresponding to each tab are provided, and the buckle 4 is arranged between the two adjacent through holes V, that is, one buckle 4 is arranged between the two first through holes V1, and the other buckle 4 is arranged between the two second through holes V2, the structure is uniformly stressed, and the corresponding tabs are folded towards or away from each other from the corresponding two through holes V, and do not overlap each other, further reducing the height.

[0047] In one embodiment, the side of the battery cell facing the first plastic part 2 is provided with a positive tab and a negative tab, and the first plastic part 2 is provided with first through holes V1 and second through holes V2, that is, the first plastic part 2 is an integral structure, which can reduce the assembly steps and facilitate assembly. In another embodiment, the side of the battery cell facing the first plastic part 2 is provided with a positive tab and a negative tab, and the first plastic part 2 is provided with two, one first plastic part 2 is provided with first through holes V1, and the other first plastic part 2 is provided with second through holes V2, that is, the first plastic part 2 is a split structure, which is respectively arranged corresponding to the two tabs, and the split structure is more flexible, which can reduce the weight and save materials. The first plastic part 2 is an integral structure or a split structure, which can be set according to actual needs, and is not limited.

[0048] The side plate 11 is provided with a first receiving groove 112, and the slot of the first receiving groove 112 faces the outer side, and the first plastic part 2 is accommodated in the first receiving groove 112, which reduces the size of the installation direction of the side plate 11 and the first plastic part 2, reduces the overall thickness, and further reduces the overall volume. The first plastic part 2 is provided with a flange edge 21 on the side, and the width of the flange edge 21 is L1, the value range of L1 is 0-10mm, and the specific L1 can be 0, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., and when the value is 0, the flange edge 21 is not provided. If the width of the flange edge 21 is too large, it will increase the weight, material and cost of the shell assembly. A gap is provided between the outer circumferential side of the flange edge 21 and the groove wall of the first receiving groove 112, which facilitates assembly. Specifically, a gap is provided between the outer circumferential side of the flange edge 21 and the groove wall of the first receiving groove 112, which facilitates the installation of the first plastic part 2 in the first receiving groove 112.

[0049] The first plastic part 2 is provided with a second receiving groove 22 for receiving the pole, reducing the size of the connection direction of the pole and the first plastic part 2, and reducing the occupied space. The height of the groove bottom of the second receiving groove 22 ranges from 1mm below the surface of the side plate 11 to 0.5H above the surface of the side plate 11, and H is the thickness of the side plate 11. Optionally, the distance between the groove bottom of the second receiving groove 22 and the upper surface of the shell 1 is L2, and L2 ranges from -1 to 0.5H, where H is the thickness of the side plate 11 or the shell 1, and L2 can be -1, 0 or 0.5H, etc. When L2 is negative, the groove bottom of the second receiving groove 22 is lower than the upper surface of the shell 1. When L2 is positive, the surface of the first plastic part 2 is higher than the upper surface of the shell 1. If L2 is too large, it is not conducive to improving the volume utilization rate. If L2 is too small, the strength of the shell assembly is low.

[0050] Optionally, two through holes V are provided, and the second receiving groove 22 is arranged between the two through holes V. The tab is divided into two parts and passes through the two through holes V and is folded in the second receiving groove 22. The pole is arranged in the second receiving groove 22, which is convenient for structural layout and assembly.

[0051] The shell assembly further comprises a second plastic part 3 arranged in the shell 1. The second plastic part 3 and the first plastic part 2 are arranged on both sides of the side plate 11. The second plastic part 3 is inserted into the side plate 11. For example, the second plastic part 3 is a rectangular plate. Four corners of the second plastic part 3 are provided with insertion columns 31. The side plate 11 is provided with four insertion openings. The four insertion columns 31 are correspondingly inserted into the four insertion openings. This facilitates disassembly and assembly of the second plastic part 3 and the side plate 11, and reduces the difficulty of assembly. Optionally, the second plastic part 3 is in the form of a plate, which reduces the internal space of the shell 1 occupied by the second plastic part 3, improves the internal space utilization rate of the battery, increases the capacity of the battery, and reduces the volume of the battery.

[0052] Optionally, the shell 1, i.e. the side plate 11, can be provided with an explosion-proof valve 5. The score on the explosion-proof valve 5 can face the inside of the shell 1 or the outside of the shell 1. The explosion-proof valve 5 can also not be provided.

[0053] Optionally, the shell 1, i.e. the side plate 11, can be provided with or not provided with a liquid injection port 113. If the liquid injection port 113 is provided, it can be arranged at the middle position or close to one side of the positive electrode or the negative electrode.

[0054] When the second plastic part 3 is an integral structure, the second plastic part 3 is provided with a corresponding avoiding hole to avoid the explosion-proof valve 5 and the liquid injection port 113. When the first plastic part 2 is an integral structure, the first plastic part 2 is provided with a corresponding avoiding structure to avoid the explosion-proof valve 5 and the liquid injection port 113.

[0055] Optionally, the bottom of the shell 1 is open. After the relevant structures such as the battery core and the second plastic part 3 are installed, a cover plate is welded with the shell 1 to close the opening.

[0056] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A housing assembly, characterized by, The shell (1) is used to accommodate an electric core connected with a tab, and the shell (1) comprises a side plate (11) towards which the tab is directed. A first plastic part (2) is arranged outside the shell (1), and the first plastic part (2) and the side plate (11) are provided with through holes (V) through which the tab can pass to be connected with a pole. A buckle (4) is used to connect the first plastic part (2) with the side plate (11).

2. The shell assembly according to claim 1, wherein the electric core is provided with one tab on the side directed towards the first plastic part (2), and the number of the through holes (V) is not less than 1; or the electric core is provided with a positive tab and a negative tab on the side directed towards the first plastic part (2), and the through holes (V) comprise a first through hole (V1) and a second through hole (V2), the positive tab passes through the first through hole (V1), the negative tab passes through the second through hole (V2), and the number of the first through hole (V1) and the second through hole (V2) is not less than 1.

3. The shell assembly according to claim 2, wherein the electric core is provided with a positive tab and a negative tab on the side directed towards the first plastic part (2), and the first plastic part (2) is provided with the first through hole (V1) and the second through hole (V2); or the electric core is provided with a positive tab and a negative tab on the side directed towards the first plastic part (2), and the first plastic part (2) is provided with two, one of the first plastic parts (2) is provided with the first through hole (V1), and the other of the first plastic parts (2) is provided with the second through hole (V2). The side plate (11) is provided with a first receiving groove (112) with an opening directed outside, and the first plastic part (2) is accommodated in the first receiving groove (112). The first plastic part (2) is provided with a flange (21) on the side, and the width of the flange (21) is greater than 0 and less than or equal to 10 mm. The first plastic part (2) is provided with a second receiving groove (22) for accommodating a pole. The through holes (V) are provided with two, and the second receiving groove (22) is arranged between the two through holes (V).

8. The shell assembly according to claim 1, wherein the buckle (4) is integrally connected to the bottom surface of the first plastic part (2), the side plate (11) is provided with a clamping hole (111) which is a stepped hole, and when the buckle (4) is clamped in the clamping hole (111), the buckle (4) is clamped on the stepped surface of the stepped hole, so that the end of the buckle (4) does not protrude from the inner surface of the side plate (11); and / or 4. The housing assembly of claim 1, wherein, ​ 5. The housing assembly of claim 4, wherein, ​ 6. The housing assembly of claim 1, wherein, ​ 7. The housing assembly of claim 6, wherein, ​ ​ ​ The buckle (4) is integrally connected to the outer surface of the side plate (11), the first plastic part (2) is provided with a clamping hole (111), the clamping hole (111) is a stepped hole, and the buckle (4) is clamped on the stepped surface of the stepped hole when clamped on the clamping hole (111), so that the end of the buckle (4) does not protrude from the top surface of the first plastic part (2).

9. The housing assembly of any of claims 1-8, wherein, Further comprising a second plastic part (3) arranged in the shell (1), the second plastic part (3) and the first plastic part (2) are arranged on both sides of the side plate (11), and the second plastic part (3) is inserted into the side plate (11).

10. A battery, characterized by The shell assembly comprises a shell (1), a side plate (11), a buckle (4), a first plastic part (2) and a second plastic part (3), the shell (1) is provided with a through hole (V), the side plate (11) is arranged in the shell (1), the buckle (4) is integrally connected to the outer surface of the side plate (11), the first plastic part (2) is arranged on one side of the side plate (11), the second plastic part (3) is arranged on the other side of the side plate (11), the first plastic part (2) is provided with a clamping hole (111), the clamping hole (111) is a stepped hole, the buckle (4) is clamped on the stepped surface of the stepped hole when clamped on the clamping hole (111), so that the end of the buckle (4) does not protrude from the top surface of the first plastic part (2), the second plastic part (3) is inserted into the side plate (11), and the second plastic part (3) is provided with a clamping hole (112), the clamping hole (112) is a stepped hole, the buckle (4) is clamped on the stepped surface of the stepped hole when clamped on the clamping hole (112), so that the end of the buckle (4) does not protrude from the top surface of the second plastic part (3). The shell assembly comprises a shell (1), a side plate (11), a buckle (4), a first plastic part (2) and a second plastic part (3), the shell (1) is provided with a through hole (V), the side plate (11) is arranged in the shell (1), the buckle (4) is integr

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