CN210136898U

CN210136898U - Output electrode protection cover of battery module and battery module

Info

Publication number: CN210136898U
Application number: CN201921408200.5U
Authority: CN
Inventors: 王祺森; 蔡锦榕; 何子杰
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-03-10
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to an output utmost point visor and battery module of battery module, this output utmost point visor includes: the first cover body is connected with the wiring harness isolation plate of the battery module and covers the low-voltage output electrode of the battery module; the second cover body is rotatably connected with the first cover body, detachably connected with the output electrode base of the battery module and capable of covering the high-voltage output electrode of the battery module in an openable mode. The utility model discloses a setting covers in the first lid of the low pressure output pole of battery module and can open and shut and cover in the second lid of high pressure output pole, can open or close the second lid according to the demand at the whole life cycle of battery module to provide effectual protection for the output pole of battery module, improved the reliability of battery module.

Description

Output electrode protection cover of battery module and battery module

Technical Field

The utility model relates to a power battery technical field especially relates to a box and battery system under battery.

Background

The output electrode of the battery module comprises a high-voltage output electrode and a low-voltage output electrode, and the low-voltage output electrode is generally a connector welded to the wiring harness isolation plate; the high voltage negative output electrode is typically an exposed copper sheet that is secured to the output electrode base by screws. In transportation and use, the low pressure output is probably not hard up because of the collision takes place the solder joint, and high pressure negative output is probably contacted with external metal very much, has the short circuit risk, can't satisfy battery module's electrical protection grade requirement.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an output utmost point visor and battery module of battery module, this output utmost point visor can provide effectual protection for the output utmost point of battery module in whole life cycle.

On the one hand, the embodiment of the utility model provides a battery module's output utmost point visor, it includes: the first cover body is connected with the wiring harness isolation plate of the battery module and covers the low-voltage output electrode of the battery module; the second cover body is rotatably connected with the first cover body, detachably connected with the output electrode base of the battery module and capable of covering the high-voltage output electrode of the battery module in an openable mode.

According to an aspect of the embodiment of the present invention, the first cover includes a first body and first connecting portions disposed on the first body and oppositely arranged along a first direction, the first connecting portions are provided with positioning holes; the second cover body comprises a second body and a second connecting part extending from one end of the second body along the second direction, the second connecting part is provided with positioning columns which are oppositely arranged along the first direction, and the positioning columns are accommodated in the positioning holes so that the second cover body can rotate relative to the first cover body; the first direction and the second direction are arranged in an intersecting manner.

According to the utility model discloses an aspect, at least partly internal surface of the locating hole of first connecting portion is the arcwall face, and the locating hole is provided with the opening along circumference, and the opening orientation is kept away from the direction setting of first body.

According to the embodiment of the utility model provides an aspect, first body and the first connecting portion of following first direction mutual disposition form the first chamber that holds, still be provided with on the first body with the first opening that holds the chamber intercommunication, the second connecting portion hold in the first chamber that holds to can rotate to the opening.

According to the utility model discloses an aspect still is provided with along the joint portion of second direction mutual disposition on the first body, and joint portion is connected with first connecting portion, and first lid is connected with the pencil division board through the joint portion of mutual disposition.

According to the utility model discloses an aspect, joint portion is including being the first section and the second section of predetermined angle setting, first section and this body coupling, and the one end and the first section of second section are connected, and the other end is the free end, and the second section is formed with the arch towards one side of first body, and the arch of the joint portion of arranging relatively along the second direction is connected with the spout joint of pencil division board.

According to the utility model discloses an aspect, the constant head tank that still is provided with on the first body corresponds on the pencil division board and is provided with the location boss, and the constant head tank can hold the location boss.

According to an aspect of the embodiment of the present invention, the second connecting portion includes first walls oppositely disposed along the first direction and a second wall disposed between the first walls oppositely disposed, and the positioning column is disposed on the first walls; the second cover body further comprises a surrounding plate arranged along the edge of the second body, and the first wall is connected with the surrounding plate to form a second containing cavity covering the high-voltage output pole.

According to the utility model discloses an aspect, the second body still is provided with the locking buckle along one side of first direction, and the locking buckle can be connected with output pole base buckle.

On the other hand, the embodiment of the utility model provides a still provide a battery module, it includes: the box body is provided with a wire harness isolation plate and an output pole base; the battery units are accommodated in the box body and integrated with a high-voltage output electrode and a low-voltage output electrode, the high-voltage output electrode is connected with the output electrode base, and the low-voltage output electrode is connected with the wiring harness isolation plate; in the output electrode protection cover of any of the battery modules described above, the first cover body of the output electrode protection cover covers the low-voltage output electrode, and the second cover body covers the high-voltage output electrode in an openable manner.

The utility model provides an output utmost point visor and battery module of battery module covers in the first lid of the low pressure output utmost point of battery module and can open and shut and cover in the second lid of high-pressure output utmost point through the setting, can open or close the second lid according to the demand in the whole life cycle of battery module to provide effectual protection for the output utmost point of battery module, improved the reliability of battery module.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic view of a partial structure of a battery module according to the present invention;

fig. 2 is a partially exploded view of the battery module shown in fig. 1;

fig. 3 is a schematic structural view of an output electrode protection cover along an angle according to the present invention;

FIG. 4 is an exploded view of the output electrode protection cover shown in FIG. 3;

FIG. 5 is a schematic diagram of the structure of the output electrode protection cover shown in FIG. 3 in an open state;

fig. 6 is a partially enlarged structural view of a region a of the battery module shown in fig. 2;

FIG. 7 is a schematic view of the protective cover of FIG. 3 at another angle;

fig. 8 is a partially enlarged structural diagram of a region B of the output electrode protection cover shown in fig. 7.

Wherein:

x-a first direction; y-a second direction;

11-a first cover; 111-a first body; 112-a first connection; 113-a positioning hole; 114-a gap; c1 — first receiving chamber; 115-opening; 116-a snap-fit portion; 116 a-first segment; 116 b-a second segment; 116 c-projection; 117-positioning grooves;

12-a second cover; 121-a second body; 122-a second connection; 122 a-a first wall; 122 b-a second wall; 123-positioning columns; 124-enclosing plate; 125-reinforcing ribs; 126-locking buckle; c2 — second receiving chamber;

1-output electrode protection cover; 2-a box body; 21-a harness insulation board; 211-a chute; 212-a positioning boss; 22-output pole base; 221-card slot;

31-high voltage output pole; 32-low voltage output pole.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art. In addition, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

For better understanding of the present invention, the output electrode protection cover of the battery module and the battery module provided by the present invention will be described in detail with reference to fig. 1 to 8.

Referring to fig. 1 and 2, the present invention provides a battery module, which includes: a case 2, a plurality of battery cells housed in the case 2, and an output electrode protection cover 1.

The box body 2 is provided with a wiring harness isolation plate 21 and an output electrode base 22, a plurality of battery units are integrated with a high-voltage output electrode 31 and a low-voltage output electrode 32, the high-voltage output electrode 31 is connected with the output electrode base 22, and the low-voltage output electrode 32 is connected with the wiring harness isolation plate 21; the output electrode protection cover 1 covers the high voltage output electrode 31 and the low voltage output electrode 32, thereby protecting the high voltage output electrode 31 and the low voltage output electrode 32.

The low voltage output electrode 32 is a connector welded to the flexible circuit board, and the high voltage output electrode 31 includes a positive electrode and a negative electrode, which are generally exposed copper sheets disposed on the output electrode base 22, and the positive electrode and the negative electrode may be disposed on two sides of the low voltage output electrode 32 or disposed on the same side of the low voltage output electrode 32. The output electrode protective cover 1 covers the high-voltage output electrode 31 and the low-voltage output electrode 32, so that the low-voltage output electrode 32 can be prevented from being loosened by welding spots due to collision in the transportation or use process, the risk of short circuit caused by contact of the high-voltage output electrode 31 and external metal is prevented, the electrical protection requirement of the battery module is met, and the reliability and the maintainability of the battery module are improved.

The specific structure of the output electrode protection cover 1 provided by the present invention is described in further detail below with reference to fig. 3 to 7.

Referring to fig. 3, the utility model also provides a battery module's output utmost point visor 1, it includes: a first cover 11 and a second cover 12.

The first cover body 11 is connected with the wiring harness isolation plate 21 of the battery module, and the first cover body 11 covers the low-voltage output electrode 32 of the battery module;

the second cover 12 is rotatably connected to the first cover 11, and the second cover 12 is detachably connected to the output electrode base 22 of the battery module and can be openably and closably covered on the high-voltage output electrode 31 of the battery module.

When the anode and the cathode of the high-voltage output electrode 31 are positioned at two sides of the low-voltage output electrode 32, the two second covers 12 are respectively rotatably connected with the first cover 11 and respectively cover the anode and the cathode of the high-voltage output electrode 31; when the positive electrode and the negative electrode of the high voltage output electrode 31 are located on the same side of the low voltage output electrode 32, the second cover 12 may cover both the positive electrode and the negative electrode of the high voltage output electrode 31.

In addition, in order to prevent the high voltage output electrode 31 from contacting with the external metal in the transportation or use process, the second cover 12 is always in the closed state, and the gap between the first cover 11 and the second cover 12 is smaller than 12mm, so that the contact gap between the high voltage output electrode 31 and the external environment can be ensured to meet the protection requirement of IPXXB. In order to connect the high-voltage output electrode 31 with the lead electrode in the maintenance process, the second cover body 12 only needs to be turned over and opened, the output electrode protection cover 1 does not need to be disassembled, and the interchangeability of the battery module in the whole life cycle is improved.

The utility model provides an output utmost point visor 1 of battery module covers in the first lid 11 of the low pressure output utmost point 32 of battery module and can open and shut and cover in the second lid 12 of high-voltage output utmost point 31 through the setting, can open or close second lid 12 according to the demand in the whole life cycle of battery module to provide effectual protection for the output utmost point of battery module, improved the reliability of battery module.

Referring to fig. 4, the first cover 11 includes a first body 111 and first connecting portions 112 disposed on the first body 111 and oppositely arranged along a first direction X, and the first connecting portions 112 are provided with positioning holes 113.

The second cover 12 includes a second body 121 and a second connecting portion 122 extending from one end of the second body 121 along the second direction Y, the second connecting portion 122 is provided with positioning posts 123 oppositely arranged along the first direction X, and the positioning posts 123 are received in the positioning holes 113, so that the second cover 12 can rotate relative to the first cover 11.

Wherein, the first direction X is intersected with the second direction Y. Optionally, the first direction X is perpendicular to the second direction Y, the first direction X is a width direction of the output electrode protection cover 1, and the second direction Y is a length direction of the output electrode protection cover 1.

It can be understood that, when the positive electrode and the negative electrode of the high voltage output electrode 31 are located at two sides of the low voltage output electrode 32, the two second covers 12 are respectively rotatably connected to the first cover 11, so that the two ends of the first connecting portion 112 along the second direction, which are oppositely arranged along the first direction X, are respectively provided with positioning holes 113 for being matched with the positioning posts 123.

Further, at least a part of the inner surface of the positioning hole 113 of the first connecting portion 112 is an arc-shaped surface, and the positioning hole 113 is provided with a notch 114 along the circumferential direction, so as to accommodate the positioning post 123 in the positioning hole 113. In order to prevent the second cover 12 from falling off relative to the first cover 11 during normal use, the notch 114 is disposed in a direction away from the first body 111.

Optionally, the positioning post 123 may be shaped like a bar to reduce the size of the opening 114. Optionally, a portion of the positioning post 123 contacting at least a portion of the arc-shaped surface of the positioning hole 113 is an arc-shaped structure, so as to reduce the friction force during the turning process of the second cover 12. The size of the arc-shaped surface depends on the size of the turning angle of the second cover 12, which is generally not more than 90 °.

Referring to fig. 4 and 5, the first body 111 and the first connecting portion 112 oppositely disposed along the first direction X form a first accommodating cavity C1, the first body 111 is further provided with an opening 115 communicating with the first accommodating cavity, and the second connecting portion 122 is accommodated in the first accommodating cavity C1 and can rotate to the opening 115. When the second connecting portion 122 rotates to the opening 115, the second cover 12 is turned to the maximum angle, so as to connect the high voltage output electrode 31 with the lead electrode.

Referring to fig. 6 to 8, the housing 2 of the battery module is provided with a wiring harness isolation plate 21 and an output electrode base 22, the wiring harness isolation plate 21 has an accommodating cavity for accommodating the low voltage output electrode 32, and sliding grooves 211 are provided on both sides of the wiring harness isolation plate 21, and the sliding grooves 211 are used for guiding and restraining the wiring harness.

In order to connect the first cover 11 and the wire harness isolation plate 21, the first body 111 is further provided with a clamping portion 116 oppositely arranged along the second direction Y, and the clamping portion 116 is connected with the first connecting portion 112 to improve the structural strength of the first cover 11. The first cover 11 is connected to the harness spacer 21 by the oppositely arranged snap-in portions 116.

Further, as shown in fig. 8, the clamping portion 116 includes a first section 116a and a second section 116b arranged at a predetermined angle, the first section 116a is connected with the first body 111, one end of the second section 116b is connected with the first section 116a, the other end is a free end, a protrusion 116c is formed on one side of the second section 116b facing the first body 111, and the protrusion 116c of the clamping portion 116 arranged oppositely along the second direction Y is clamped and connected with the chute 211 of the harness isolation plate 21, so as to limit the first cover 11 from moving along the second direction Y.

In addition, a positioning groove 117 is further disposed on the first body 111, a positioning boss 212 is correspondingly disposed on the sliding groove 211 of the harness isolation plate 21, and the positioning groove 117 can accommodate the positioning boss 212, so as to limit the movement of the first cover 11 along the first direction X. Therefore, the first cover 11 is connected with the sliding groove 211 and the positioning boss 212 of the wire harness isolation plate 21, so that the first cover 11 can be limited to move in a positioning plane, and poor contact problems such as welding spot loosening and the like caused by collision of the low-voltage output electrode 32 in the transportation or use process can be prevented.

Referring to fig. 6 and 7 again, the second connecting portion 122 of the second cover 12 includes first walls 122a disposed opposite to each other along the first direction X and second walls 122b disposed between the first walls 122a, and the positioning posts 123 are disposed on the first walls 122 a.

The second cover 12 further includes a shroud 124 disposed along an edge of the second body 121, and the first wall 122a is connected to the shroud 124 to form a second receiving cavity C2 covering the high voltage output pole 31.

Further, the second cover 12 is further provided with a reinforcing rib 125 located in the second accommodating cavity C2, the height of the reinforcing rib 125 is lower than the strength of the shroud 124, so as to avoid interference between the reinforcing rib 125 and the high-voltage output electrode, and the reinforcing rib 125 is used for improving the structural strength of the second cover 12.

In addition, one side of the second body 121 along the first direction X is further provided with a locking buckle 126, and the locking buckle 126 can be connected with the output pole base 22 in a buckling manner. Specifically, as shown in fig. 7, a clamping groove 221 is formed in the output pole base 22, and the locking buckle 126 of the second cover 12 is connected to the clamping groove 221 in a buckling manner, so that the second cover 12 is detachably connected to the output pole base 22.

Therefore, the utility model provides an assembly process for output utmost point visor 1 of battery module as follows:

step S1: assembling the first cover 11 and the second cover 12;

step S2: clamping and connecting the clamping part 116 of the first cover body 11 with the chute 211 of the wire harness isolation plate 21, and accommodating the boss 212 of the wire harness isolation plate 21 in the positioning groove 117 of the first cover body 11;

step S3: the second cover 12 is rotated relative to the first cover 11 to the plane where the high voltage output pole 31 is located, and the locking buckle 126 is connected with the clamping groove 221 of the output pole base 22 in a buckling manner.

When the high-voltage output electrode 31 needs to be maintained, the locking buckle 126 of the second cover body 12 is separated from the clamping groove 221 only by using a tool, and the second cover body 12 can be opened by turning over the locking buckle, so that the whole output electrode protection cover 1 does not need to be completely detached, the operation is simple, and the maintenance efficiency is high.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. An output electrode protection cover (1) of a battery module, comprising:

a first cover (11) connected to a harness isolation plate (21) of the battery module, the first cover (11) covering a low-voltage output electrode (32) of the battery module;

and the second cover body (12) is rotatably connected with the first cover body (11), and the second cover body (12) is detachably connected with the output pole base (22) of the battery module and can cover the high-voltage output pole (31) of the battery module in an openable and closable manner.

2. The output electrode protection cover (1) according to claim 1, wherein the first cover (11) comprises a first body (111) and first connection portions (112) provided on the first body (111) and arranged oppositely along a first direction (X), the first connection portions (112) being provided with positioning holes (113);

the second cover body (12) comprises a second body (121) and a second connecting part (122) extending from one end of the second body (121) along a second direction (Y), the second connecting part (122) is provided with positioning columns (123) oppositely arranged along the first direction (X), and the positioning columns (123) are accommodated in the positioning holes (113) so that the second cover body (12) can rotate relative to the first cover body (11);

the first direction (X) and the second direction (Y) are arranged to intersect.

3. The output electrode protection cover (1) according to claim 2, wherein at least a part of the inner surface of the positioning hole (113) of the first connecting portion (112) is an arc-shaped surface, the positioning hole (113) is provided with a notch (114) along the circumferential direction, and the notch (114) is arranged in a direction away from the first body (111).

4. The output pole protection cover (1) according to claim 2, wherein the first body (111) and the first connection portion (112) arranged opposite to each other along the first direction (X) form a first accommodation chamber (C1), the first body (111) is further provided with an opening (115) communicating with the first accommodation chamber, and the second connection portion (122) is accommodated in the first accommodation chamber (C1) and can be rotated to the opening (115).

5. The output electrode protection cover (1) according to claim 2, wherein the first body (111) is further provided with a clamping portion (116) oppositely arranged along the second direction (Y), the clamping portion (116) is connected with the first connecting portion (112), and the first cover body (11) is connected with the harness isolation plate (21) through the clamping portion (116) oppositely arranged.

6. The output electrode protection cover (1) according to claim 5, wherein the clamping portion (116) comprises a first section (116a) and a second section (116b) which are arranged at a predetermined angle, the first section (116a) is connected with the first body (111), one end of the second section (116b) is connected with the first section (116a), the other end is a free end, a protrusion (116c) is formed on one side of the second section (116b) facing the first body (111), and the protrusion (116c) of the clamping portion (116) arranged oppositely along the second direction (Y) is clamped and connected with a sliding groove (211) of the harness isolation plate (21).

7. The output electrode protection cover (1) according to claim 6, wherein a positioning groove (117) is further disposed on the first body (111), a positioning boss (212) is correspondingly disposed on the sliding groove (211) of the harness isolation plate (21), and the positioning groove (117) can accommodate the positioning boss (212).

8. The output electrode protection cover (1) according to claim 2, wherein the second connecting portion (122) comprises a first wall (122a) oppositely disposed along the first direction (X) and a second wall (122b) disposed between the oppositely disposed first walls (122a), the positioning column (123) being disposed on the first wall (122 a);

the second cover (12) further includes a shroud (124) disposed along an edge of the second body (121), and the first wall (122a) is connected to the shroud (124) to form a second receiving cavity (C2) covering the high-voltage output pole (31).

9. The output pole protection cover (1) according to claim 2, characterized in that the second body (121) is further provided with a locking catch (126) on one side in the first direction (X), the locking catch (126) being snappingly connectable with the output pole base (22).

10. A battery module, comprising:

a box body (2) provided with a wiring harness isolation plate (21) and an output pole base (22);

a plurality of battery units accommodated in the case (2), the plurality of battery units integrating a high voltage output electrode (31) and a low voltage output electrode (32), the high voltage output electrode (31) being connected to the output electrode base (22), the low voltage output electrode (32) being connected to the harness isolation plate (21);

the output electrode protection cover (1) of a battery module according to any one of claims 1 to 9, wherein a first cover (11) of the output electrode protection cover (1) covers the low voltage output electrode (32), and a second cover (12) covers the high voltage output electrode (31) in an openable and closable manner.