CN109994675B

CN109994675B - Insulating box of battery terminal

Info

Publication number: CN109994675B
Application number: CN201810076574.5A
Authority: CN
Inventors: 徐铭鸿
Original assignee: Mobiletron Electronics Co Ltd
Current assignee: Mobiletron Electronics Co Ltd
Priority date: 2018-01-02
Filing date: 2018-01-26
Publication date: 2022-01-21
Anticipated expiration: 2038-01-26
Also published as: CN109994675A

Abstract

An insulating box of battery terminal comprises a base and an upper cover, wherein the base is combined with a battery pack, and a bottom plate is provided with a plurality of through holes for the terminals of the battery pack to pass through. The upper cover is detachably combined with the base, a containing chamber is formed between the upper cover and the base, the containing chamber is communicated with the through hole, and the terminal extends into the containing chamber. Therefore, the terminal of the battery pack can be effectively protected.

Description

Insulating box of battery terminal

Technical Field

The present invention relates to a battery pack; in particular to an insulation box of a battery terminal.

Background

With the progress of science and technology, the demand for electric energy is increasing day by day, and for the demand for large electric power, alternating current or a battery pack formed by connecting a plurality of battery modules in series can be used as a power supply. The advantage of using a battery pack as the power source is that the power source is mobile and not limited to use in a fixed location.

The terminals of the conventional battery pack are exposed to the outside so that a person can electrically connect the terminals by using the conductive member to achieve a required voltage or current. However, there are various risks that the exposed terminals are contaminated or oxidized due to the dust in the external environment when the terminals are exposed to the air, or metal parts fall on the terminals to short-circuit between the positive and negative terminals of the battery module, and burn out or even explode. In addition, if a person accidentally touches the terminal, there is a possibility that an electric shock may occur.

Therefore, the design of the existing battery pack is still not perfect and there is still a need for improvement.

Disclosure of Invention

In view of the above, the present invention is directed to an insulation case for a battery terminal, which can protect the terminal of a battery pack.

In order to achieve the above object, the present invention provides a battery terminal insulation box mounted on a battery pack, the battery pack having a plurality of terminals; the insulating box comprises a base and an upper cover, wherein the base is combined with the battery pack and comprises a bottom plate, the bottom plate is provided with a plurality of through holes penetrating through two opposite surfaces of the bottom plate, and the through holes are used for the terminals to penetrate through; the upper cover is detachably combined with the base, a containing chamber is formed between the upper cover and the base, and the containing chamber is communicated with the through holes.

The invention has the advantages that the terminal of the battery pack can be effectively coated by the insulating box, and the risk of dirt, oxidation and even short circuit caused by the exposed terminal is avoided.

Drawings

Fig. 1 is a perspective view of a battery pack according to a first preferred embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic view showing the terminals in the chambers of the first insulating case.

Fig. 4 is a perspective view of the first insulating case of the above preferred embodiment.

Fig. 5 is an exploded perspective view of the first insulating case of the above preferred embodiment.

FIG. 6 is a schematic view showing the combination of the top cover and the base.

Fig. 7 is a perspective view of the second insulating case of the above preferred embodiment.

Fig. 8 is an exploded perspective view of the second insulating case of the above preferred embodiment.

Fig. 9 is a perspective view of a first insulation case according to a second preferred embodiment of the present invention.

Fig. 10 is an exploded perspective view of the first insulating case of the above preferred embodiment.

FIG. 11 is a schematic view showing the combination of the top cover and the base.

Fig. 12 is a perspective view of the second insulating case of the above preferred embodiment.

[ notation ] to show

[ invention ]

100 battery pack

10 battery module 12 terminal 122 conductive post

124 insulating layer 126 positioning block 126a inclined plane

126b stop surface 14 conducting strip

20 first insulating case 20a with opening in compartment 20b

22 base 24 bottom plate 242 perforation

26 standing wall 262 positioning groove 28 lower side wall

282 projection 282a ramp 30 cover

32 upper side wall 322 main wall 324 extension board

324a groove

34 second insulating case 36 base 38 bottom plate

382 perforating 40 upper cover

42 first insulating box 44 upper cover 442 main wall

442a blocking edge 444 extending plate 444a projection

46 base 462 through hole 48 vertical wall

50 lower sidewall 50a top edge 502 groove

52 second insulating case 54 base 56 upper cover

S space

Detailed Description

In order that the invention may be more clearly described, preferred embodiments will now be described in detail with reference to the accompanying drawings. Referring to fig. 1 to 3, a battery pack 100 equipped with an insulating case according to a first preferred embodiment of the present invention includes a plurality of battery modules 10, each of the battery modules 10 has a plurality of terminals 12, each of the terminals 12 has a columnar shape, and has a conductive pillar 122 and an insulating layer 124, the insulating layer 124 is combined with the periphery of the conductive pillar 122, and the top surface of the conductive pillar 122 is connected to a conductive sheet 14. At least a portion of the insulating layer 124 of the terminals 12 has at least one positioning block 126, the positioning block 126 has an inclined surface 126a and a blocking surface 126b, the inclined surface 126a is inclined outward from top to bottom in a direction away from the insulating layer 124, and the blocking surface 126b is connected to the bottom of the inclined surface 126 a.

The insulating box serves to isolate the terminal 12 from the external environment, and in particular to protect the conductive post 122 and the conductive sheet 14 on the terminal 12. The number of the insulation boxes is plural, and two types are distinguished, which are the first insulation box 20 and the second insulation box 34 respectively, and the difference is that the number of the terminals 12 that can be accommodated by the first insulation box 20 is larger than that of the second insulation box 34.

Referring to fig. 4 to 6, the first insulating case 20 includes a base 22 and an upper cover 30, wherein the base 22 is configured to be combined with the battery pack 100, the base 22 includes a bottom plate 24, the bottom plate 24 has a plurality of through holes 242 penetrating through two opposite sides of the bottom plate 24, the through holes 242 are configured to allow the terminals 12 to pass through, and after the terminals 12 pass through the through holes 242 of the base 22, the conductive sheets 14 are mounted on the terminals 12, so as to electrically connect the terminals 12.

The base 22 has four lower sidewalls 28 connected to the periphery of the bottom plate 24, wherein two opposite lower sidewalls 28 each have at least one first connection portion, and the first connection portion is one of a bump and a groove. In this embodiment, the number of the at least one first combining portion is two, and the first combining portion is a protrusion 282 protruding from the outer side surface of the lower sidewall 28, and the protrusion 282 has an inclined surface 282 a.

The top cover 30 is detachably coupled to the base 22, and a chamber 20a is formed between the top cover and the base 22, the chamber 20a is communicated with the through holes 242, and the terminal 12 extends into the chamber 20 a. The upper cover 30 has four upper sidewalls 32 corresponding to the lower sidewalls 28, wherein two opposite upper sidewalls 32 each have at least one second connection portion, and the second connection portion is another one of a bump and a groove. The number of the at least one second engaging portion is two and is the groove 324a in this embodiment. Each upper side wall 32 includes a main wall 322 and at least one extending plate 324, in this embodiment, two extending plates 324, the extending plates 324 are formed by extending downward from the main wall 322, and the extending plates 324 have grooves 324a to form second coupling portions. The upper cover 30 is aligned with the base 22, the extension plate 324 of the upper sidewall 32 slides downward along the inclined surface 282a of the protrusion 282 of the lower sidewall 28 at the outer side of the lower sidewall 28, so that each protrusion 282 extends into each groove 324a, and each upper sidewall 32 abuts against each lower sidewall 28, thereby completing the combination of the upper cover 30 and the base 22. The first insulating case 20 has a plurality of openings 20b on its peripheral surface through which the conductive sheet 14 passes.

In this embodiment, the through holes 242 of the bottom plate 24 are arranged in a matrix form, and the number of the through holes 242 is 12. The periphery of each through hole 242 of the bottom plate 24 is provided with a plurality of standing walls 26 surrounding each through hole 242, and the standing walls 26 are located in the accommodating chamber 20a and abut against the insulating layer 124 on the side surface of the corresponding terminal 12. The stop surface 126b of the positioning block 126 abuts against the vertical wall 26 to fix the base 22 to the battery pack 100. More specifically, at least a portion of the vertical walls 26 have a positioning groove 262 recessed from the top edge of the corresponding vertical wall 26 toward the bottom plate 24, the stop surface 126b of the positioning block 126 abuts against the bottom of the positioning groove 262, and each vertical wall 26 is fastened to each terminal 12 to limit the lateral displacement of the first insulating box 20.

A space S is formed between the lower sidewall 28 and each of the adjacent vertical walls 26 for a signal wire (not shown) to pass through the space S, so as to isolate the signal wire from the terminal 12 and the conductive plate 14 and avoid contact.

Fig. 7 and 8 show a second insulating case 34, which is similar in structure to the first insulating case 20, and includes a base 36 and a top cover 40, with the difference that the number of the through holes 382 of the bottom plate 38 is 6.

Fig. 9 to 11 show a first insulating case 42 according to a second preferred embodiment of the present invention, which has a structure substantially the same as that of the first insulating case 20 according to the first preferred embodiment, except that the main wall 442 of the two opposite upper sidewalls of the upper cover 44 of the present embodiment has a blocking edge 442a, the extension plate 444 is formed by extending downwards from the blocking edge 442a, and the extension plate 444 has a protrusion 444a to form a second joint portion; the lower side wall 50 corresponding to the base 46 has a groove 502 to form a first combining portion, and the groove 502 penetrates through the outer side and the inner side of the lower side wall 50; after the top cover 44 is combined with the base 46, the blocking edge 442a abuts against the top edge 50a of the bottom wall 50, the extension plate 444 is located inside the bottom wall 50, and the protrusion 444a of the extension plate 444 extends into the groove 502. In addition, the vertical walls 48 around the through holes 462 are not provided with positioning grooves, after the base 46 is installed in the battery pack 100, the positioning blocks 126 on the terminals 12 are abutted against the top edges of the vertical walls 48, and each vertical wall 48 can be clamped with each terminal 12 to limit the lateral displacement of the insulating box 42.

Fig. 12 shows a second insulating case 52 of the present embodiment, which is similar to the first insulating case 42 in structure and includes a base 54 and an upper cover 56, with the difference that the number of through holes of the base plate is 6.

According to the invention, the insulating box of the battery terminal can effectively coat the terminal and the conducting strip of the battery pack, and avoid the risk of dirt, oxidation and even short circuit caused by the exposed terminal and the conducting strip.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described in the specification and claims should be included in the scope of the present invention.

Claims

1. An insulation box of battery terminal is mounted on a battery pack, the battery pack is provided with a plurality of terminals, an insulation layer is arranged around each terminal, and at least one part of the insulation layer is provided with at least one positioning block; the insulating case includes:

the base is combined with the battery pack and comprises a bottom plate, the bottom plate is provided with a plurality of through holes penetrating through two opposite surfaces of the bottom plate, the through holes are used for the terminals to penetrate through, the periphery of each through hole of the bottom plate is provided with a plurality of vertical walls surrounding each through hole, each insulating layer is attached to the plurality of vertical walls at the periphery of each through hole, and each positioning block is abutted against at least one discrete wall;

the upper cover is detachably combined with the base, a containing chamber is formed between the upper cover and the base, and the containing chamber is communicated with the through holes.

2. The insulation case for battery terminals according to claim 1, wherein at least a portion of the vertical walls have a positioning groove formed by recessing the top edge of the corresponding vertical wall toward the bottom plate; the positioning blocks are respectively abutted against the positioning grooves.

3. The insulation case for battery terminals according to claim 1, wherein the base has two opposite lower sidewalls connected to the bottom plate, each of the lower sidewalls having at least one first coupling portion; the upper cover is provided with two opposite upper side walls which respectively correspond to the lower side walls; each upper side wall is provided with at least one second combining part which is combined with the first combining part of each lower side wall.

4. The insulation case of a battery terminal according to claim 3, wherein each of the first coupling parts is one of a projection and a groove; each second combining part is the other one of the convex block and the groove.

5. The insulation box for battery terminals according to claim 4, wherein each of the upper sidewalls comprises a main wall and at least one extension plate, wherein the main wall has a retaining edge, the at least one extension plate extends downward from each of the retaining edges, and the at least one extension plate has a protrusion thereon to form the at least one second engaging portion; each lower side wall is provided with at least one groove to form at least one first combination part; each blocking edge abuts against each lower side wall, each extension plate is positioned on the inner side of each lower side wall, and each lug extends into each groove.

6. The insulation box for battery terminals according to claim 4, wherein each of the upper sidewalls comprises a main wall and at least one extension plate, wherein the at least one extension plate is formed by extending downward from each of the main walls, and the at least one extension plate has a groove thereon to form the at least one second engaging portion; the outer side surface of each lower side wall is provided with at least one lug to form at least one first combination part; each upper side wall is abutted against each lower side wall, each extension plate is positioned at the outer side of each lower side wall, and each lug extends into each groove.