Spacer ring assembly of battery, battery, battery module, battery pack and electric equipment

Abstract

The utility model provides a space ring assembly of a battery, the battery, a battery module, a battery pack and electric equipment. According to the space ring assembly of the battery, the battery comprises a tab, the tab comprises a thickening part and a connecting end, the thickness of the thickening part is greater than that of the connecting end, and the space ring assembly of the battery comprises a first space ring and a second space ring. The first space ring is provided with a first clamping part and a third clamping part. And the second space ring is provided with a second clamping part and a fourth clamping part. The second space ring and the first space ring are arranged in the first direction and are oppositely arranged, a clamping gap is formed by the first clamping part and the second clamping part, and a clamping groove is formed by the third clamping part and the fourth clamping part. In the first direction, the size of the clamping groove is larger than that of the clamping gap. The space ring assembly disclosed by the utility model has the effects of clamping the tabs at multiple parts and being easy to assemble.

Description

Technical Field

[0001] The utility model generally relates to the technical field of batteries, and more specifically to a battery spacer assembly, a battery, a battery module, a battery pack and an electrical device. Background Art

[0002] At present, in the field of battery manufacturing and assembly, in order to facilitate the assembly of battery tabs and prevent the tabs from being scattered or squeezed due to vibration during battery use, a spacer assembly is usually provided to clamp the tabs to ensure the state of the tabs and avoid the risk of short circuit caused by contact between the positive and negative poles.

[0003] However, for the pole ear with thickening at the root, if the spacer in the related technology is used to fix the pole ear, due to the thickening of the pole ear, the distance between the spacer and the pole ear is far after buckling, so that the limiting effect of the spacer on the pole ear is weakened, and the pole ear has a great risk of collapse, which is not conducive to the fixation of the pole ear. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the utility model provides a battery spacer assembly in a first aspect, the battery comprising a tab, the tab comprising a thickened portion and a connection end, the thickness of the thickened portion being greater than the thickness of the connection end, the battery spacer assembly comprising:

[0006] A first spacer ring, the first spacer ring being provided with a first clamping portion and a third clamping portion; and

[0007] A second spacer ring, wherein the second spacer ring is provided with a second clamping portion and a fourth clamping portion;

[0008] Among them, the second spacer ring and the first spacer ring are arranged along the first direction and are opposite to each other, the first clamping part and the second clamping part form a clamping gap, and the third clamping part and the fourth clamping part form a clamping groove; the clamping gap is used to pass the connecting end, and the clamping groove is used to accommodate the thickened part; along the first direction, the size of the clamping groove is larger than the size of the clamping gap.

[0009] The spacer assembly of the battery according to the first aspect of the utility model conforms to the thickness characteristics of the connecting end and the thickened part of the pole ear, and has a clamping effect on the connecting end and the thickened part of the pole ear, so that the pole ear can be firmly clamped by the spacer assembly when the battery is assembled, which is beneficial to the assembly of the battery; in addition, the provision of the spacer assembly reduces the risk of the pole ear being squeezed and insulated, and can also ensure the bending of the connecting end of the pole ear, which facilitates the insertion of the pole ear into the shell, and is suitable for installing the pole ear with a thickened root.

[0010] Optionally, the clamping gap and the clamping groove are arranged in sequence along a second direction perpendicular to the first direction, and the clamping gap is communicated with the clamping groove.

[0011] Optionally, the inner wall surface of the third clamping portion and the inner wall surface of the fourth clamping portion are used to abut against the thickened portion.

[0012] Optionally, an inner wall surface of the third clamping portion and an inner wall surface of the fourth clamping portion are perpendicular to the first direction.

[0013] Optionally, the first clamping portion and the third clamping portion are connected via a first inclined surface, and the second clamping portion and the fourth clamping portion are connected via a second inclined surface; the first inclined surface and the second inclined surface are used to abut against the thickened portion.

[0014] Optionally, the dimension of the clamping groove along the first direction is 2 mm to 5 mm; and / or

[0015] A dimension of the clamping groove along the second direction is 2 mm to 5 mm.

[0016] Optionally, the first spacer is provided with a first matching portion, the second spacer is provided with a second matching portion, the first matching portion and the second matching portion form a matching groove, the pole ear further includes a tower-shaped portion, and the matching groove is used to match the tower-shaped portion.

[0017] Optionally, the first mating portion and the second mating portion are used to abut against the tower-shaped portion.

[0018] Optionally, the first mating portion includes a first abutting surface, which is connected to the third clamping portion; the second mating portion includes a second abutting surface, which is connected to the fourth clamping portion; and the first abutting surface and the second abutting surface are used to abut the tower-shaped portion.

[0019] Optionally, the first spacer ring and the second spacer ring form a receiving groove, the clamping gap is communicated with the receiving groove, and the receiving groove is used to receive the connecting end.

[0020] A second aspect of the utility model provides a battery, comprising:

[0021] The spacer assembly of the battery according to the above; and

[0022] The pole lug includes a thickened portion and a connecting end, the thickened portion is arranged in the clamping groove, and the connecting end is passed through the clamping gap.

[0023] The battery according to the second aspect of the utility model is suitable for assembling the tabs made of PET film, has high safety, is light in weight, and is easy to assemble.

[0024] A third aspect of the present invention provides a battery module, comprising the battery described above.

[0025] The battery module according to the third aspect of the utility model has high safety, light weight and is easy to assemble.

[0026] A fourth aspect of the present invention provides a battery pack, comprising the battery according to the above, or the battery module according to the above.

[0027] The battery pack according to the fourth aspect of the utility model has high safety, light weight and is easy to assemble.

[0028] A fifth aspect of the utility model provides an electrical device, comprising the battery according to the above, or the battery module according to the above, or the battery pack according to the above, wherein the battery, battery module and battery pack are used to supply power to the electrical device.

[0029] The electrical equipment according to the fifth aspect of the utility model has high safety and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0031] Figure 1 A cross-sectional view of a pole ear of a root thickening solution in the prior art; and

[0032] Figure 2 The utility model is a cross-sectional view of a battery spacer assembly according to a preferred embodiment of the present invention.

[0033] Description of Reference Numerals

[0034] 100: Tab 101: Tower-shaped part

[0035] 102: Thickened part 103: Connection end

[0036] 120: first spacer 121: first clamping portion

[0037] 122: third clamping portion 123: first matching portion

[0038] 124: first inclined surface 125: first contact surface

[0039] 130: second spacer 131: second clamping portion

[0040] 132: fourth clamping portion 133: second matching portion

[0041] 134: second inclined surface 135: second contact surface

[0042] 140: Clamping gap 150: Clamping groove

[0043] 151: Inner wall surface 160: Matching groove

[0044] 170: Accommodating groove D1: First direction

[0045] D2: Second direction DETAILED DESCRIPTION

[0046] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0047] In this document, ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0048] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0049] In this document, “equal”, “same”, etc. are not strictly limited in mathematical and / or geometric senses, but also include errors that can be understood by those skilled in the art and allowed by manufacturing or use.

[0050] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0051] Figure 2 The utility model shows a battery spacer assembly, the battery includes a tab 100. Figure 1 As shown, the tab 100 includes a thickened portion 102 and a connecting end 103, and the thickness of the thickened portion 102 is greater than the thickness of the connecting end 103. The battery spacer assembly includes a first spacer 120 and a second spacer 130. The first spacer 120 is provided with a first clamping portion 121 and a third clamping portion 122. The second spacer 130 is provided with a second clamping portion 131 and a fourth clamping portion 132.

[0052] The second spacer 130 and the first spacer 120 are arranged along the first direction D1 and are disposed opposite to each other, the first clamping portion 121 and the second clamping portion 131 form a clamping gap 140, and the third clamping portion 122 and the fourth clamping portion 132 form a clamping groove 150. The clamping gap 140 is used to pass the connecting end 103, and the clamping groove 150 is used to accommodate the thickened portion 102. Along the first direction D1, the size of the clamping groove 150 is larger than the size of the clamping gap 140.

[0053] According to the battery spacer assembly of the utility model, the connection end 103 and the thickened portion 102 of the pole lug 100 are adapted to the thickness characteristics, and the connection end 103 and the thickened portion 102 of the pole lug 100 are clamped, so that the pole lug 100 can be firmly clamped by the spacer assembly during battery assembly, which is beneficial to battery assembly. In addition, the setting of the spacer assembly reduces the risk of the pole lug 100 being squeezed and insulated, and can also ensure the bending of the connection end 103 of the pole lug 100, making it easier for the pole lug 100 to enter the shell, and is suitable for installing the pole lug 100 with a thickened root.

[0054] The spacer assembly of the battery according to the utility model is suitable for assembling the tab 100 with the PET-AL scheme. AL is the abbreviation of aluminum material. Figure 1 As shown, the tab 100 includes a tower-shaped portion 101, a thickened portion 102 and a connecting end 103. The base of the tab 100 is made of PET film, and then aluminum is plated on the surface of the base. The tab 100 is welded by ultrasonic roller welding. After welding, the top of the tower-shaped portion 101 is thickened to form the thickened portion 102, while the connecting end 103 is still made of pure aluminum foil. The thickness of the thickened portion 102 is generally 2 to 4 times the thickness of the connecting end 103. The connecting end 103 is C-shaped and is used to connect to the pole of the battery cover (not shown in the figure).

[0055] The first spacer 120 and the second spacer 130 form a receiving groove 170, the clamping gap 140 is in communication with the receiving groove 170, and the connecting end 103 extends to the receiving groove 170 through the clamping gap 140. After the battery is assembled, the receiving groove 170 cooperates with the cover plate (not shown in the figure), so that the connecting end 103 can be connected to the pole of the cover plate through the receiving groove 170.

[0056] Further, the first spacer 120 is provided with a first matching portion 123, the second spacer 130 is provided with a second matching portion 133, the first matching portion 123 and the second matching portion 133 form a matching groove 160, the tab 100 also includes a tower-shaped portion 101, the matching groove 160 is used to match the tower-shaped portion 101, that is, the shape of the matching groove 160 is equivalent to the shape of the tower-shaped portion 101, the plane where the wall surface of the first matching portion 123 and the second matching portion 133 form the matching groove 160 is parallel to the surface of the tower-shaped portion facing the matching groove 160, or the two have a similar inclination angle relative to the first direction D1, so that when the spacer assembly and the tab are combined to assemble the battery, the spacer assembly can reduce the spacer assembly from encroaching on the battery energy zone space, thereby improving the energy density of the battery. In addition, the matching groove 160 can also be used to abut against the tower-shaped portion 101, thereby having a limiting effect on the tower-shaped portion 101.

[0057] Reference Figure 2 In general, the clamping gap 140, the clamping groove 150 and the matching groove 160 are arranged in sequence along the second direction D2, the second direction D2 is perpendicular to the first direction D1, and the clamping gap 140 is connected to the clamping groove 150. The arrangement of the clamping gap 140, the clamping groove 150 and the matching groove 160 is adapted to the parts of the tab 100 with different thicknesses, thereby conforming to the thickness of the parts of the tab 100 with different thicknesses (the connecting end 103, the thickened part 102 and the tower-shaped part 101), thereby limiting the parts of the tab 100 with different thicknesses.

[0058] Optionally, the inner wall surface 151 of the third clamping portion 122 and the inner wall surface 151 of the fourth clamping portion 132 (i.e., the inner walls on both sides of the clamping groove 150) are used to abut against the thickened portion 102, and the inner wall surface 151 of the third clamping portion 122 and the inner wall surface 151 of the fourth clamping portion 132 are perpendicular to the first direction D1, thereby effectively limiting the thickened portion 102 along the first direction D1, preventing the thickened portion 102 of the pole ear 100 from squeezing the spacer assembly along the first direction D1 and causing the spacer assembly to expand outward, thereby preventing the setting of the thickened portion 102 from affecting the assembly of the battery cover.

[0059] Optionally, the first clamping portion 121 and the third clamping portion 122 are connected via a first inclined surface 124, and the second clamping portion 131 and the fourth clamping portion 132 are connected via a second inclined surface 134. The first inclined surface 124 and the second inclined surface 134 are used to abut against the thickened portion 102, so that the spacer assembly has a good limiting effect on the tab 100 along the second direction D2, preventing the thickened portion 102 from entering the receiving groove 170, and preventing the bending space of the connecting end 103 from being occupied, thereby ensuring the capacity of the battery.

[0060] The size of the clamping groove 150 along the first direction D1 (i.e., the distance between the two inner wall surfaces 151 along the first direction D1) is suitable to be greater than 0 mm to 5 mm of the thickness of the thickened portion 102, so as to facilitate the installation of the pole tab 100 and effectively clamp the pole tab 100. The size of the clamping groove 150 along the first direction D1 is 2 mm to 5 mm. The size of the clamping groove 150 along the second direction D2 is 2 mm to 5 mm.

[0061] Optionally, the first mating portion 123 includes a first abutting surface 125, and the first abutting surface 125 is connected to the third clamping portion 122. The second mating portion 133 includes a second abutting surface 135, and the second abutting surface 135 is connected to the fourth clamping portion 132. The first abutting surface 125 and the second abutting surface 135 are used to abut the tower-shaped portion 101, further limiting the position of the tab 100 along the second direction D2, and preventing the thickened portion 102 from invading the accommodating groove 170 and occupying the bending space of the connecting end 103.

[0062] Optionally, the first inclined surface 124 and the second inclined surface 134 form an angle of 0° to 45° with the first direction D1, thereby effectively limiting the thickened portion 102 of the tab 100. The first abutting surface 125 and the second abutting surface 135 form an angle of 0° to 45° with the first direction D1, thereby effectively limiting the tower-shaped portion 101 of the tab 100.

[0063] The utility model also provides a battery, comprising the battery spacer assembly and the tab 100 according to the above. The tab 100 comprises a thickened portion 102 and a connection end 103, the thickened portion 102 is arranged in the clamping groove 150, and the connection end 103 is passed through the clamping gap 140. The battery according to the utility model is suitable for assembling the tab 100 using PET film, has high safety, light weight, and is easy to assemble.

[0064] Furthermore, the battery according to the utility model also includes a core body (not shown in the figure), a shell (not shown in the figure) and a cover body (not shown in the figure), the core body is arranged in the shell, the tower-shaped part 101 of the pole ear 100 is formed by welding the pole ear 100 and the core body, the spacer assembly is arranged in the shell, and the cover body is installed to the shell and cooperates with the accommodating groove 170 of the spacer assembly, and the cover body is provided with a pole (not shown in the figure), which extends to the accommodating groove 170 and is connected to the connecting end 103 of the pole ear 100.

[0065] The utility model also provides a battery module, comprising the battery according to the above.

[0066] The battery module of the utility model has high safety, light weight and is easy to assemble.

[0067] The utility model also provides a battery pack, comprising the battery according to the above, or the battery module according to the above.

[0068] The battery pack of the utility model has high safety, light weight and is easy to assemble.

[0069] The utility model also provides an electric device, comprising the battery according to the above, or the battery module according to the above, or the battery pack according to the above, wherein the battery, the battery module and the battery pack are used to supply power to the electric device. The electric device according to the utility model has high safety and light weight.

[0070] An electric device according to the utility model can be a vehicle, an electric two-wheeled vehicle, an electric multi-wheeled vehicle, a ship, an unmanned aerial vehicle, an energy storage cabinet, an unmanned aerial vehicle, a computer, a laptop computer, an electric toy, etc. The electric device includes a battery pack, and the battery pack is used to power the electric device.

[0071] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0072] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A battery spacer assembly, the battery comprising a tab, the tab comprising a thickened portion and a connection end, the thickness of the thickened portion being greater than the thickness of the connection end, characterized in that: The spacer assembly of the battery comprises: A first spacer ring, the first spacer ring being provided with a first clamping portion and a third clamping portion; and A second spacer ring, wherein the second spacer ring is provided with a second clamping portion and a fourth clamping portion; Among them, the second spacer ring and the first spacer ring are arranged along the first direction and are opposite to each other, the first clamping part and the second clamping part form a clamping gap, and the third clamping part and the fourth clamping part form a clamping groove; the clamping gap is used to pass the connecting end, and the clamping groove is used to accommodate the thickened part; along the first direction, the size of the clamping groove is larger than the size of the clamping gap.

2. The battery spacer assembly according to claim 1, characterized in that: The clamping gap and the clamping groove are arranged in sequence along a second direction perpendicular to the first direction, and the clamping gap is communicated with the clamping groove.

3. The battery spacer assembly according to claim 1, characterized in that: The inner wall surface of the third clamping portion and the inner wall surface of the fourth clamping portion are used to abut against the thickened portion.

4. The battery spacer assembly according to claim 3, characterized in that: An inner wall surface of the third clamping portion and an inner wall surface of the fourth clamping portion are perpendicular to the first direction.

5. The battery spacer assembly according to claim 1, characterized in that: The first clamping portion and the third clamping portion are connected via a first inclined surface, and the second clamping portion and the fourth clamping portion are connected via a second inclined surface; the first inclined surface and the second inclined surface are used to abut against the thickened portion.

6. The battery spacer assembly according to claim 2, characterized in that: The dimension of the clamping groove along the first direction is 2 mm to 5 mm; and / or A dimension of the clamping groove along the second direction is 2 mm to 5 mm.

7. The battery spacer assembly according to claim 1, characterized in that: The first spacer is provided with a first matching portion, the second spacer is provided with a second matching portion, the first matching portion and the second matching portion form a matching groove, the pole ear also includes a tower-shaped portion, and the matching groove is used to adapt to the tower-shaped portion.

8. The battery spacer assembly according to claim 7, characterized in that: The first mating portion and the second mating portion are used to abut against the tower-shaped portion.

9. The battery spacer assembly according to claim 7, characterized in that: The first mating portion includes a first abutting surface connected to the third clamping portion; the second mating portion includes a second abutting surface connected to the fourth clamping portion; the first abutting surface and the second abutting surface are used to abut against the tower-shaped portion.

10. The battery spacer assembly according to claim 1, characterized in that: The first spacer and the second spacer form a receiving groove, the clamping gap is communicated with the receiving groove, and the receiving groove is used to receive the connecting end.

11. A battery, characterized in that: include: The spacer assembly of a battery according to any one of claims 1 to 10; as well as The pole lug includes a thickened portion and a connecting end, the thickened portion is arranged in the clamping groove, and the connecting end is passed through the clamping gap.

12. A battery module, characterized in that: Comprising a battery according to claim 11.

13. A battery pack, characterized in that: Comprising the battery according to claim 11 or the battery module according to claim 12.

14. An electrical device, characterized in that: It comprises the battery according to claim 11, or the battery module according to claim 12, or the battery pack according to claim 13, and the battery, battery module and battery pack are used to power the electrical device.

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