Protection assembly and battery module

Abstract

The utility model discloses a protection component, including fastener and insulation protection device, one end of the fastener is accommodated in the insulation protection device, the other end of the fastener passes through the insulation protection device and is used for connecting two electric connection points, the insulation protection device is fixed on the battery module through the fastener, and the insulation protection device is fixed on the battery module through the fastener. And the connecting part of the fastener and the two electric connecting points is shielded. According to the utility model, an electric connection part is protected in a shielding manner, the structure is simple and reasonable, and the safety protection effect is good. The utility model further discloses a battery module.

Description

Technical Field

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

[0002] The development of electric vehicles is getting faster and faster, and there are more and more safety problems for electric vehicles. How to ensure the safety of personnel during installation, maintenance and other operations is an urgent problem to be solved at present. Therefore, in the safety requirements and specifications for electric vehicles, clear requirements for electric shock protection of personnel are made. Among them, for direct contact protection requirements, it is clearly stipulated that the exposed high-voltage live area should achieve IPXXB protection. Based on this requirement, the battery pack of an electric vehicle also needs to meet this specification. Therefore, how to protect all the external high-voltage electrical connection points in the battery pack and prevent them from being contacted is an urgent problem to be solved. Summary of the Utility Model

[0003] In order to overcome the deficiencies in the prior art, the purpose of the utility model is to provide a protection component and a battery module, which protect the electrical connection points in a shielding manner, and the exposed part of the fastener is directly placed inside the insulation protection device, with a simple and reasonable structure and good safety protection effect.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A protection component includes a fastener and an insulation protection device. One end of the fastener is accommodated inside the insulation protection device, and the other end of the fastener passes through the insulation protection device and is used to connect two electrical connection points. The insulation protection device is fixed on the battery module through the fastener and shields the connection part of the fastener and the two electrical connection points.

[0006] In one embodiment, the insulation protection device includes a box body, and a through first through hole is provided on the box body. One end of the fastener is located inside the box body, and the other end of the fastener passes through the first through hole and is used to connect the two electrical connection points.

[0007] In one embodiment, the box body has a thickness direction, the box body has a bottom surface arranged along the thickness direction, and the first through hole penetrates the bottom surface.

[0008] In one embodiment, the insulation protection device further includes a gasket, the gasket is arranged inside the box body, and a second through hole adapted to the first through hole is opened on the gasket. The fastener passes through the second through hole and the first through hole in sequence and then connects the two electrical connection points.

[0009] In one embodiment, the outer peripheral diameter of the gasket is greater than the inner diameter of the first through hole, and the outer periphery of the gasket is provided with a concave-convex surface for contacting the inner wall of the box body.

[0010] In one embodiment, the box body further includes a box cover, one side of the box cover is movably connected to the box body, and the other side of the box cover is detachably connected to the box body.

[0011] In one embodiment, a clamping block is provided on the outer side wall of the box body, and a clamping buckle is provided on the box cover, and the clamping buckle is clamped and connected to the clamping block; or, a clamping buckle is provided on the outer side wall of the box body, and a clamping block is provided on the box cover, and the clamping buckle is clamped and connected to the clamping block.

[0012] In one embodiment, the fastener is a bolt, including a screw rod and a nut. The screw rod passes through the first through hole and is used to connect the two electrical connection points, and the nut is located inside the box body.

[0013] The present utility model also provides a battery module, including a first connector, a second connector and the protection component as described above. Electrical connection points are provided on both the first connector and the second connector. One end of the fastener is received in the insulation protection device, and the other end of the fastener passes through the insulation protection device and connects the two electrical connection points.

[0014] The beneficial effects of the present utility model are as follows: The connection part of the electrical connection point and the fastener is shielded by the insulation protection device, and the exposed part of the fastener is directly placed inside the insulation protection device. The structure is simple and reasonable, improving the safety protection effect; and compared with the common structural design in which part of the connector is inserted into the insulation protection device, the present utility model does not require repeated mold opening, the design is simple and reasonable, can be applied to the interconnection between connectors of different sizes, and has a wide range of applications. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the insulation protection device of the embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a cross-sectional view of the box body in along H-H;

[0018] Figure 3 isFigure 2 Schematic cross-sectional view without a gasket installed;

[0019] Figure 4 is Figure 1 a side view of;

[0020] Figure 5 is Figure 1 a schematic structural view of the gasket in;

[0021] Figure 6 a schematic partial structural view of the battery module;

[0022] Figure 7 is Figure 6 a partial enlarged schematic view at A.

[0023] In the figure: 1, fastener; 2, insulation protection device; 21, box body; 211, first through hole; 212, box cover; 213, clamping block; 214, buckle; 215, accommodation cavity; 22, gasket; 221, second through hole; 222, concave-convex surface; 3, first connecting member; 4, second connecting member. Specific embodiments

[0024] Next, specific embodiments of the present invention will be described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the description of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0025] In the description of the present invention, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0026] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of description and simplification of 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 cannot be understood as a limitation of the present invention.

[0027] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.

[0028] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the elements listed, it may also include other elements not specifically listed.

[0029] The present utility model provides a protection component, as Figures 1 to 7 shown, including a fastener 1 and an insulation protection device 2. One end of the fastener 1 is accommodated in the insulation protection device 2, and the other end of the fastener 1 passes through the insulation protection device 2 and is used to connect two electrical connection points (not shown) on the battery module. The insulation protection device 2 is fixed on the battery module through the fastener 1 and shields the connection part between the fastener 1 and the two electrical connection points. In this embodiment, the connection part between the electrical connection points and the fastener 1 is shielded by the insulation protection device 2, and the exposed part of the fastener 1 is directly accommodated inside the insulation protection device 2. The structure is simple and reasonable, improving the safety protection effect. Compared with the common structural design in which part of the connector is inserted into the insulation protection device 2, the present utility model does not require repeated mold opening, the design is simple and reasonable, can be applied to the interconnection between connectors of different sizes, and has a wide application range. Among them, electrical connection points are provided on both the first connector 3 and the second connector 4 on the battery module, and the two electrical connection points are connected through the fastener 1 to realize the electrical connection of the two connectors. The first connector 3 and the second connector 4 can both be busbars, or the first connector 3 and the second connector 4 are respectively a busbar and a high-voltage connector; the insulation protection device 2 is made of insulating material.

[0030] As an implementation manner, as Figures 1 to 7 shown, the insulation protection device 2 includes a box body 21. The box body 21 includes a receiving cavity 215. A through first through hole 211 is provided on the box body 21. The first through hole 211 communicates with the receiving cavity 215. One end of the fastener 1 is located in the receiving cavity 215 of the box body 21, and the other end of the fastener 1 passes through the first through hole 211 and is used to connect two electrical connection points. Among them, the exposed end of the fastener 1 is directly arranged inside the box body 21, avoiding the fastener 1 being exposed outside, and the safety protection effect is good.

[0031] As an implementation manner, as Figure 1 and Figure 7 shown, the box body 21 has a thickness direction D. The box body 21 has a bottom surface arranged along the thickness direction D. The first through hole 211 penetrates the bottom surface. The bottom surface of the box body 21 is used to shield the connection part between the two electrical connection points and the fastener 1. Among them, the box body 21 can be arranged in the shape of a cuboid, a cube or a cylinder.

[0032] As an implementation manner, as Figure 1 、 Figure 2 、 Figure 5 and Figure 7As shown, the insulation protection device 2 further includes a gasket 22. The gasket 22 is disposed inside the box body 21. A second through hole 221 adapted to the first through hole 211 is formed in the gasket 22. The fastener 1 passes through the second through hole 221 and the first through hole 211 in sequence and then connects two electrical connection points. Wherein, when the fastener 1 is installed, the gasket 22 can play a certain protective role for the box body 21 to prevent the box body 21 from being damaged when the fastener 1 is fixed.

[0033] As an implementation manner, as Figure 2 , Figure 5 and Figure 7 shown, the outer peripheral diameter of the gasket 22 is larger than the inner diameter of the first through hole 211, so that the gasket 22 can be accommodated inside the box body 21 and cannot fall off the box body 21 through the first through hole 211. An uneven surface 222 for contacting the inner wall of the box body 21 is provided on the outer periphery of the gasket 22. The irregular design of the grooves and protrusions avoids the problem that the gasket 22 rotates along with the fastener 1 when the fastener 1 is fixed. Wherein, the gasket 22 is a steel sleeve.

[0034] As an implementation manner, as Figures 1 to 7 shown, the box body 21 further includes a box cover 212. One side of the box cover 212 is movably connected to the box body 21, and the other side of the box cover 212 is detachably connected to the box body 21, preventing the top surface of the box body 21 from being exposed, which may cause the top surface of the fastener 1 to communicate with the outside world. The box body 21 can be sealed through the box cover 212, so that the shielding effect of the insulation protection device 2 reaches the best. After the fastener 1 passes through the box body 21 and is stably connected to the two electrical connection points, the box cover 212 is then covered on the box body 21.

[0035] As an implementation manner, as Figure 1 and Figure 4 shown, a latch 213 is provided on the outer side wall of the box body 21, and a buckle 214 is provided on the box cover 212. The buckle 214 is snap-connected to the latch 213; or, a buckle 214 is provided on the outer side wall of the box body 21, and a latch 213 is provided on the box cover 212. The buckle 214 is snap-connected to the latch 213.

[0036] As an implementation manner, the fastener 1 is a bolt, including a screw rod (not shown) and a nut (not shown). The screw rod passes through the first through hole 211 and is used to connect two electrical connection points, and the nut is located inside the box body 21.

[0037] The present utility model further provides a battery module, as Figures 1 to 7As shown, it includes a first connecting member 3, a second connecting member 4 and the protection assembly as described above. Electrical connection points are provided on both the first connecting member 3 and the second connecting member 4. One end of the fastener 1 is accommodated in the insulation protection device 2, and the other end of the fastener 1 passes through the insulation protection device 2 and then connects the two electrical connection points. The connection part between the two electrical connection points and the fastener 1 is shielded by the insulation protection device 2, and the exposed part of the fastener 1 is arranged inside the insulation protection device 2. The structure is simple and reasonable, and the safety protection effect is good; the connection part is protected by means of shielding. Compared with the plug-in structure in which the traditional connecting part is partially inserted into the insulation protection device 2, the mold opening cost is reduced and the applicability is stronger.

[0038] As mentioned above, it is only a preferred embodiment of the present invention and does not impose any formal limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications using the disclosed technical content within the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A protection component, characterized in that, It includes a fastener (1) and an insulation protection device (2). One end of the fastener (1) is accommodated within the insulation protection device (2), and the other end of the fastener (1) passes through the insulation protection device (2) and is used to connect two electrical connection points. The insulation protection device (2) is fixed on the battery module through the fastener (1) and shields the connection part of the fastener (1) and the two electrical connection points.

2. The protective component according to claim 1, characterized in that, The insulation protection device (2) includes a box body (21). A through first through hole (211) is provided on the box body (21). One end of the fastener (1) is located inside the box body (21), and the other end of the fastener (1) passes through the first through hole (211) and is used to connect the two electrical connection points.

3. The protection component according to claim 2, wherein The box body (21) has a thickness direction (D). The box body (21) has a bottom surface arranged along the thickness direction (D), and the first through hole (211) penetrates the bottom surface.

4. The protection component according to claim 2, wherein, The insulation protection device (2) further includes a gasket (22). The gasket (22) is arranged inside the box body (21). A second through hole (221) adapted to the first through hole (211) is provided on the gasket (22). The fastener (1) sequentially passes through the second through hole (221) and the first through hole (211) and then connects the two electrical connection points.

5. The protection component according to claim 4, characterized in that The outer peripheral diameter of the gasket (22) is larger than the inner diameter of the first through hole (211). An uneven surface (222) for contacting the inner wall of the box body (21) is provided on the outer periphery of the gasket (22).

6. The protection component according to claim 2, wherein The box body (21) further includes a box cover (212). One side of the box cover (212) is movably connected to the box body (21), and the other side of the box cover (212) is detachably connected to the box body (21).

7. The protection component according to claim 6, characterized in that A clamping block (213) is provided on the outer wall of the box body (21), and a clamping buckle (214) is provided on the box cover (212). The clamping buckle (214) is snap-connected to the clamping block (213); or, a clamping buckle (214) is provided on the outer side wall of the box body (21), and a clamping block (213) is provided on the box cover (212). The clamping buckle (214) is snap-connected to the clamping block (213).

8. The protection component according to claim 2, characterized in that, The fastener (1) is a bolt, including a screw rod and a nut. The screw rod passes through the first through hole (211) and is used to connect the two electrical connection points, and the nut is located inside the box body (21).

9. A battery module, characterized in that, It includes a first connecting piece (3), a second connecting piece (4) and the protection assembly according to any one of claims 1-8. Electrical connection points are provided on both the first connecting piece (3) and the second connecting piece (4). One end of the fastener (1) is accommodated within the insulation protection device (2), and the other end of the fastener (1) passes through the insulation protection device (2) and then connects the two electrical connection points.

Images