CN221041459U

CN221041459U - Connection structure, battery module and consumer

Info

Publication number: CN221041459U
Application number: CN202322661995.3U
Authority: CN
Inventors: 田艳峰; 程德勇
Original assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-28
Anticipated expiration: 2033-09-28

Abstract

The embodiment of the utility model discloses a connecting structure, a battery module and electric equipment, which are used for solving the technical problem that the existing battery module has a plurality of defects in a mode of welding the poles of all batteries through electric connectors. The embodiment of the utility model comprises an insertion groove, an insertion part and a clamping piece; the battery is characterized in that one of the insertion grooves and the insertion parts is arranged on the pole of the battery, the other one of the insertion grooves and the insertion parts is correspondingly arranged on an electric connecting piece, the insertion parts are inserted into the insertion grooves to realize electric connection, and the insertion grooves and the insertion parts are fixed through the clamping pieces. Through the design, the welding mode of the existing electric connecting piece and the battery pole is effectively replaced, so that a series of problems caused by welding the electric connecting piece and the battery pole are avoided.

Description

Connection structure, battery module and consumer

Technical Field

The utility model relates to the technical field of batteries, in particular to a connecting structure, a battery module and electric equipment.

Background

With the increasing awareness of environmental protection, batteries are increasingly favored in the market, especially in the automotive field. In order to obtain a larger capacity, it is currently mainly to arrange batteries in sequence and connect the poles of the batteries in series or in parallel to form a battery module.

In the existing battery module, the poles on each battery are connected in series or in parallel through the electric connecting piece, specifically, the electric connecting piece is erected on the poles of two batteries, then the poles and the electric connecting piece are welded together to realize the series connection or the parallel connection among a plurality of batteries, and the welding mode of the electric connecting piece and the poles can have various defects, for example, the defects of one, the welding thermal resistance generated when the electric connecting piece and the poles are welded, the heat productivity of the battery pole is easy to be caused to be large, and the potential safety hazard is easy to be generated when the battery is overheated; secondly, the defects of missing welding, less welding and the like are frequently caused by the problem of positioning accuracy in the welding process of the electric connecting piece and the polar post, so that the connection strength of a welding part and the overcurrent capacity between batteries are influenced; thirdly, the electric connecting piece and the pole post are fixed in a welding mode, so that the later-stage battery is difficult to disassemble and replace, and an operator can break the welding part in a cutting mode and the like; fourthly, the electric connecting piece is fixed with the pole column in a welding mode, welding slag is easy to exist, and insulation abnormality is easy to occur due to the fact that a blue film is easy to pierce.

Therefore, it is an important subject to be studied by those skilled in the art to find a solution to the above-mentioned problems.

Disclosure of utility model

The embodiment of the utility model discloses a connecting structure, a battery module and electric equipment, which are used for solving the technical problem that the existing battery module has a plurality of defects in a mode of welding the poles of all batteries through electric connectors.

The embodiment of the utility model provides a connecting structure, a battery module and electric equipment, which comprises an insertion groove, an insertion part and a clamping piece;

The battery is characterized in that one of the insertion grooves and the insertion parts is arranged on the pole of the battery, the other one of the insertion grooves and the insertion parts is correspondingly arranged on an electric connecting piece, the insertion parts are inserted into the insertion grooves to realize electric connection, and the insertion grooves and the insertion parts are fixed through the clamping pieces.

Optionally, the insertion part includes a protruding column inserted into the insertion groove and an outer cover body sleeved outside the outer groove wall of the insertion groove, and the protruding column and the outer cover body together form a containing cavity to contain the insertion groove;

The outer side wall of the outer cover body is provided with matching holes and supporting parts which are arranged at intervals along the circumferential direction, and matching clamping grooves are formed in positions, corresponding to the matching holes, of the outer side groove walls of the insertion grooves;

The clamping piece is clamped in the matching clamping groove through the matching hole and is propped against the outer groove wall through the propping part so that the inserting part and the inserting groove are mutually fixed.

Optionally, the clip part is arranged around the housing body, and an opening is provided to be inserted into two adjacent matching holes on one side of the housing body and to penetrate out from the other side of the housing body after the clip abuts against the abutting part.

Optionally, an elastic piece is arranged on the bottom of the inner side groove of the insertion groove, and the elastic piece is connected with a conductive flat plate positioned in the insertion groove;

When the convex column is inserted into the insertion groove, the bottom end part of the convex column is abutted against the conductive flat plate.

Optionally, the elastic member is in a compressed state after the chucking member fixes the insertion portion and the insertion groove to each other.

Optionally, a clamping piece for clamping the convex column is arranged in the insertion groove;

When the convex column is inserted into the insertion groove, the clamping piece clamps the convex column so as to limit the displacement of the convex column along the radial direction of the insertion groove.

Optionally, the clamping piece is an oblique ring spring;

The inner side groove wall of the insertion groove is provided with a mounting groove along the circumferential direction of the inner side groove wall, and the bevel ring spring is mounted in the mounting groove;

when the convex column is inserted into the insertion groove, the bevel ring spring is clamped at the periphery of the convex column to limit the radial displacement of the convex column along the insertion groove.

The embodiment of the utility model provides a battery module, which comprises at least two batteries, an electric connecting piece and the connecting structure, wherein the batteries, the electric connecting piece and the connecting structure are arranged along a first direction;

The battery is provided with a pole, the insertion groove and the insertion groove are respectively arranged in the pole and the electric connecting piece, the insertion groove or the insertion part arranged on the electric connecting piece are symmetrically arranged, and therefore the pole of two adjacent batteries is electrically connected with the electric connecting piece through the connecting structure.

Optionally, when the insertion groove is disposed on the pole, and the insertion portion is disposed at two ends of the electrical connection member, the insertion groove is formed by the pole being recessed inward from one end of the pole away from the battery, and the insertion portion is integrally formed or fixedly connected with the electrical connection member;

When the insertion groove is formed in the two ends of the electric connecting piece, the insertion part is arranged on the pole, the insertion groove is formed by inward recessing of the surface of the electric connecting piece, and the insertion part and the pole are integrally formed or fixedly connected.

The embodiment of the utility model provides electric equipment, which comprises the battery module.

From the above technical solutions, the embodiment of the present utility model has the following advantages:

In this embodiment, one of the battery post and the electrical connector is provided with an insertion portion, and the other one is correspondingly provided with an insertion slot, and the insertion portion is inserted into the insertion slot and is fixed by the clamping member, so that the battery post and the electrical connector are fixedly connected and electrically conductive. Through the design, the welding mode of the existing electric connecting piece and the pole of the battery is effectively replaced, the problem that the heat productivity of the pole of the battery is large due to the fact that welding thermal resistance is generated by welding is avoided, and the problem that insulation abnormality is easy to cause due to the fact that welding slag exists is also avoided. The problem of cold joint and missing welding caused by insufficient welding positioning precision can be avoided, the connection stability of the pole post of the battery and the electric connecting piece is ensured, and the overcurrent capacity between the batteries is ensured. In addition, because the insert part is fixed through the chucking spare with the insert groove, when needs are separated the utmost point post of battery and electric connection spare, only need with chucking spare unpick out can separate the utmost point post of battery and electric connection spare, easy operation is convenient, disassembles the efficiency of changing the battery in the effective later stage battery module that promotes.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a connection structure according to an embodiment of the present utility model;

fig. 3 is a schematic illustration of a specific structure of an insertion portion in a connection structure according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a connection structure provided in an embodiment of the present utility model;

Illustration of: a battery 1; a pole 2; an electrical connection 3; a clamping member 4; an insertion groove 5; a matching clamping groove 6; a clamping member 7; an insertion section 8; an outer cover 9; a holding portion 10; a mating hole 11; a post 12; a conductive plate 13; and an elastic member 14.

Detailed Description

In order to better understand the aspects of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, a connecting structure provided in an embodiment of the present utility model includes an insertion slot 5, an insertion portion 8, and a clamping member 4;

One of the insertion groove 5 and the insertion part 8 is arranged on the pole 2 of the battery 1, the other is correspondingly arranged on an electric connector 3, and the insertion part 8 is inserted into the insertion groove 5 to realize electric connection, wherein the insertion groove 5 and the insertion part 8 are fixed through the clamping piece 4.

The clamping member 4 in this embodiment is preferably a clamping spring.

In this embodiment, one of the post 2 of the battery 1 and the electrical connector 3 is provided with an insertion portion 8, and the other is correspondingly provided with an insertion slot 5, and the insertion portion 8 is inserted into the insertion slot 5 and is fixed by the clamping member 4, so that the post 2 of the battery 1 is fixedly connected with the electrical connector 3 and realizes electrical conduction. Through the design, the welding mode of the existing electric connecting piece 3 and the pole column 2 of the battery 1 is effectively replaced, the problem that the heat productivity of the pole column 2 of the battery 1 is large due to welding heat resistance generated by welding is avoided, and the problem that insulation abnormality is easy to cause due to welding slag is also avoided. The problem of cold joint and missing welding caused by insufficient welding positioning precision can be avoided, the connection stability of the pole 2 of the battery 1 and the electric connecting piece 3 is ensured, and the overcurrent capacity between the batteries 1 and 1 is ensured. In addition, because insert portion 8 is fixed through chucking spare 4 with insert groove 5, when needs are with the utmost point post 2 of battery 1 and electric connection spare 3 separation, only need with chucking spare 4 unpick out can separate the utmost point post 2 of battery 1 and electric connection spare 3, easy operation is convenient, disassembles the efficiency of changing battery 1 in the effective later stage battery module that promotes.

Further, the insertion portion 8 in this embodiment includes a protruding column 12 inserted into the insertion slot 5 and a housing body 9 sleeved outside the outer slot wall of the insertion slot 5, where the protruding column 12 and the housing body 9 together form a receiving cavity to receive the insertion slot 5;

The outer side wall of the outer cover body 9 is provided with matching holes 11 and supporting parts 10 which are arranged at intervals along the circumferential direction, and matching clamping grooves 6 are arranged at positions of the outer side groove walls of the insertion grooves 5 corresponding to the matching holes 11;

The clamping piece 4 is clamped in the matching clamping groove 6 through the matching hole 11 and is propped against the outer groove wall through the propping part 10 so that the inserting part 8 and the inserting groove 5 are mutually fixed, wherein the clamping groove 6 can encircle the outer peripheral wall of the inserting groove 5, so that the clamping piece 4 can be conveniently aligned with the matching hole 11, the clamping piece 4 can be conveniently and directly stretched into the clamping groove 6 after passing through the matching hole 11, the clamping area is increased, and then the inserting part 8 can be clamped in the inserting groove 5 through the clamping force of the clamping piece 4.

In order to increase the contact area between the insertion portion 8 and the insertion groove 5 as much as possible, the outer wall surface of the insertion groove 5 is abutted against the inner wall surface of the insertion portion 8, and the top surface of the insertion groove 5 is abutted against the groove bottom wall surface of the insertion portion 8.

Specifically, in this embodiment, the clamping member 4 is partially disposed around the outer housing 9, and an opening is provided to be inserted into two adjacent mating holes 11 on one side of the outer housing 9 and to pass out from the other side of the outer housing 9 after the clamping member 4 abuts the abutting portion 10. The number of the fitting holes 11 may be 2, and the two fitting holes 11 extend from one side of the outer cover 9 to the other side, and when the two end portions of the fastener 4 are inserted into the two fitting holes 11 from one side of the outer cover, the end portions thereof may be inserted from the other side of the corresponding fitting holes 11, so as to improve the convenience of the fastening, and at the same time, in order to improve the stability of the fastening, the circumferential length of the abutting portion 10 between the fitting holes 11 may be expanded as much as possible, so long as the two end portions of the fastener 4 can be ensured to be smoothly inserted into the fitting holes 11.

It should be noted that, through the above design, the operator can accomplish the installation and the dismantlement work between insertion groove 5 and insertion portion 8 fast and conveniently to effectively promote the fixation and the dismantlement efficiency between the utmost point post 2 and the electric connector 3 of battery 1.

Further, an elastic member 14 is arranged on the bottom of the inner side groove of the insertion groove 5 in the embodiment, and the elastic member 14 is connected with a conductive flat plate 13 positioned in the insertion groove 5;

When the boss 12 is inserted into the insertion groove 5, the bottom end of the boss 12 abuts against the conductive plate 13. The conductive plane 13 may extend along the bottom of the insertion slot 5, so as to increase the contact area with the stud 12 as much as possible, and improve the overcurrent capability, so long as it does not interfere with the slot wall of the insertion slot 5 to affect the insertion and extraction.

After the clip 4 fixes the insertion portion 8 and the insertion groove 5 to each other, the bottom end portion of the stud 12 presses the conductive plate 13 so that the elastic member 14 is in a compressed state. Through the design, the connecting structure in the embodiment can be effectively prevented from moving between the insertion part 8 and the insertion groove 5 in the moving process, and the stability of the connecting structure is ensured. In addition, the contact area between the pole 2 and the electric connecting piece 3 can be increased by the abutting connection of the convex column 12 and the conductive flat plate 13, so that the overcurrent capacity of the battery 1 is ensured, and the heat dissipation performance of the pole 2 of the battery 1 is effectively increased.

Further, the elastic member 14 in the present embodiment may be a spring, a shrapnel, etc., and preferably, the elastic member 14 in the present embodiment adopts a spring.

Further, a clamping piece 7 for clamping the convex column 12 is arranged in the insertion groove 5 in the embodiment;

When the boss 12 is inserted into the insertion groove 5, the clamping member 7 clamps the boss 12 to restrict displacement of the boss 12 in the radial direction of the insertion groove 5.

It should be noted that, through the above design, the displacement of the protruding column 12 along the radial direction of the insertion groove 5 can be limited, so that the protruding column 12 is not easy to swing in the insertion groove 5 when the connection structure is subjected to external force, and the stability of the connection structure is ensured.

Specifically, the clamping member 7 in the present embodiment is a canted coil spring;

The inner side groove wall of the insertion groove 5 is provided with a mounting groove (not labeled) along the circumferential direction, and the inclined ring spring is mounted in the mounting groove;

When the boss 12 is inserted into the insertion groove 5, the bevel ring spring is clamped on the outer periphery of the boss 12 to limit the displacement of the boss 12 along the radial direction of the insertion groove 5, so as to ensure the stability of the connection structure.

In order to further increase the contact area, the outer wall surface of the protruding column 12 of the insertion part and the inner wall surface of the insertion groove 5 are abutted by the clamping piece 7, wherein the protruding column 12 is a cylinder, and the clamping piece 7 is an oblique ring spring arranged around the cylinder. Meanwhile, when the insertion part 8 is arranged in the insertion groove 5, the clamping piece 7 is in a compressed state, and the clamping piece 7 arranged circumferentially around the convex column 12 can ensure that the insertion part 8 and the insertion groove 5 can be tightly abutted when vibrating in the horizontal direction, so that poor contact caused by vibration is avoided.

Of course, the protruding column 12 may be in other shapes, which is favorable to cuboid, cube, elliptic cylinder, etc., and the clamping piece 7 may be enclosed around the protruding column 12 at intervals at this moment, so long as the protruding column 12 can be ensured to be clamped stably.

When the installation is needed, the insertion part 8 is aligned with the insertion groove 5, so that the insertion part 8 is installed in the insertion groove 5, at this time, the matching hole 11 of the insertion part 8 and the matching clamping groove 6 of the insertion groove 5 are correspondingly arranged, the clamping piece 4 is inserted from the two matching holes 11 at one end of the insertion part 8, and when the clamping piece 4 abuts against the abutting part 10, the installation of the clamping piece 4 is completed, and at this time, the clamping and fitting of the inner wall surface of the insertion part 8 and the outer wall surface of the insertion groove 5 can be ensured. Simultaneously, inside projection 12 circumference is held through the elasticity of the inner wall face of holder 7 and insertion groove 5, and the tip of projection 12 is held through electrically conductive flat 13 and elastic component 14 and insertion groove 5 elasticity, makes between insertion portion 8 and the insertion groove 5 inside and outside all can support each other and hold the laminating, improves area of contact, holds through elasticity in horizontal direction and vertical direction simultaneously, avoids the poor contact that vibration in horizontal direction and vertical direction led to.

When the disassembly is needed, only a relatively far-away force is applied to the two end parts of the clamping piece 4, the distance between the two end parts is enlarged, so that the clamping piece 4 is taken out from the matching hole 11, and at the moment, the inserting part 8 can be outwards ejected through the elastic piece 14 arranged at the bottom of the inserting groove 5, so that the inserting part 8 is disassembled, and the disassembly convenience is improved.

Referring to fig. 1 to 4, a battery module according to an embodiment of the present utility model includes at least two batteries 1 arranged along a first direction, an electrical connector 3, and the above-mentioned connection structure;

the battery 1 is provided with a pole 2, the insertion groove 5 and the insertion part 8 are respectively arranged on the pole 2 and the electric connector 3, and the insertion groove 5 or the insertion part 8 arranged on the electric connector 3 are symmetrically arranged, so that the pole 2 of two adjacent batteries 1 is electrically connected with the electric connector 3 through the connection structure.

Further, in the first embodiment, when the insertion groove 5 is provided to the pole 2, the insertion portions 8 are provided to both ends of the electrical connector 3,

The insertion groove 5 is formed by inward recessing one end of the pole 2 away from the battery 1, and the insertion part 8 and the electrical connector 3 are integrally formed or fixedly connected. In addition, in order to ensure structural stability of the electrical connector 3, it is preferable that the insertion portion 8 is integrally formed with the electrical connector 3. Meanwhile, in order to simplify the structure, two adjacent fitting holes 11 located at the two insertion portions 8 communicate with each other, and at the same time, the attachment and detachment of the clip 4 is facilitated.

In the second embodiment, when the insertion groove 5 is provided at both ends of the electrical connector 3 and the insertion portion 8 is provided on the pole 2, the insertion groove 5 is formed by recessing the surface of the electrical connector 3 inward, and the insertion portion 8 is integrally formed or fixedly connected with the pole 2. In addition, in order to secure structural stability of the pole 2, it is preferable that the insertion portion 8 is integrally formed with the pole 2.

Referring to fig. 1 to 4, an electric device provided in an embodiment of the utility model includes the above-mentioned battery module.

It should be noted that, the electric equipment in this embodiment may be an automobile battery pack, an energy storage device, and the like. In addition, in the present embodiment, the electric device may include a plurality of battery modules, which is not limited in this embodiment.

The above description of the connection structure, the battery module and the electric device provided by the present utility model is detailed, and those skilled in the art should not understand the limitation of the present utility model in view of the foregoing description of the embodiments of the present utility model.

Claims

1. A connecting structure is characterized by comprising an inserting groove (5), an inserting part (8) and a clamping piece (4);

One of the insertion groove (5) and the insertion part (8) is arranged on the pole column (2) of the battery (1), the other one of the insertion groove (5) and the insertion part (8) is correspondingly arranged on an electric connecting piece (3), and the insertion part (8) is inserted into the insertion groove (5) to realize electric connection, wherein the insertion groove (5) and the insertion part (8) are fixed through the clamping piece (4).

2. The connecting structure according to claim 1, wherein the insertion portion (8) includes a boss (12) inserted into the insertion slot (5) and a housing body (9) sleeved outside the outer slot wall of the insertion slot (5), and the boss (12) and the housing body (9) together form a receiving cavity to receive the insertion slot (5);

The outer side wall of the outer cover body (9) is provided with matching holes (11) and supporting parts (10) which are arranged at intervals along the circumferential direction, and matching clamping grooves (6) are formed in positions, corresponding to the matching holes (11), of the outer side wall of the insertion groove (5);

The clamping piece (4) is clamped in the matched clamping groove (6) through the matched hole (11) and is propped against the outer groove wall through the propping part (10) so that the inserting part (8) and the inserting groove (5) are mutually fixed.

3. A connection according to claim 2, characterized in that the clamping member (4) is arranged partly around the outer casing (9) and is provided with an opening to be inserted from two adjacent mating holes (11) on one side of the outer casing (9) and to be passed out from the other side of the outer casing (9) after the clamping member (4) has been brought into abutment with the abutment portion (10).

4. The connecting structure according to claim 2, characterized in that an elastic member (14) is provided on the inner groove bottom of the insertion groove (5), the elastic member (14) being connected with a conductive flat plate (13) located in the insertion groove (5);

When the convex column (12) is inserted into the insertion groove (5), the bottom end of the convex column (12) is abutted against the conductive flat plate (13).

5. The connecting structure according to claim 4, characterized in that the elastic member (14) is in a compressed state after the retainer (4) secures the insertion portion (8) and the insertion groove (5) to each other.

6. The connection structure according to claim 2, characterized in that the inside of the insertion slot (5) is provided with a clamping element (7) for clamping the stud (12);

When the convex column (12) is inserted into the insertion groove (5), the clamping piece (7) clamps the convex column (12) to limit the displacement of the convex column (12) along the radial direction of the insertion groove (5).

7. The connection according to claim 6, characterized in that the clamping element (7) is a canted coil spring;

The inner side groove wall of the insertion groove (5) is provided with a mounting groove along the circumferential direction, and the inclined ring spring is arranged in the mounting groove;

When the convex column (12) is inserted into the insertion groove (5), the inclined ring spring is clamped on the periphery of the convex column (12) to limit the displacement of the convex column (12) along the radial direction of the insertion groove (5).

8. A battery module comprising at least two batteries (1) arranged in a first direction, an electrical connection (3) and a connection structure according to any one of claims 1 to 7;

Be provided with utmost point post (2) on battery (1), insert groove (5) with insert portion (8) set up respectively in utmost point post (2) with electric connecting piece (3), set up in insert groove (5) on electric connecting piece (3) or insert portion (8) symmetry set up, so that utmost point post (2) of two adjacent batteries (1) are through connection structure with electric connecting piece (3) realize the electricity and connect.

9. The battery module according to claim 8, wherein when the insertion groove (5) is provided in the pole (2), the insertion portion (8) is provided at both ends of the electrical connection member (3), the insertion groove (5) is formed by the pole (2) being recessed inward from one end away from the battery (1), the insertion portion (8) being integrally formed with or fixedly connected to the electrical connection member (3);

When the insertion groove (5) is formed in two ends of the electric connecting piece (3), the insertion part (8) is arranged in the pole (2), the insertion groove (5) is formed by inward recessing of the surface of the electric connecting piece (3), and the insertion part (8) and the pole (2) are integrally formed or fixedly connected.

10. A powered device comprising a battery module according to claim 8 or 9.