CN206758502U - Battery modules - Google Patents

Abstract

The utility model provides a battery module group, which includes a plurality of cylindrical batteries, a negative electrode manifold, an insulating plate, a positive electrode manifold, a fixing seat, a plurality of power-taking clip springs and a plurality of power-taking screws; the cylindrical battery includes a negative electrode shell and Positive electrode cap, the positive electrode cap is provided with a connecting column with an internal thread; the negative electrode manifold and the positive electrode manifold are arranged opposite to each other and have a plurality of through holes; the insulating plate is located between the negative electrode manifold and the positive electrode manifold and has a plurality of corresponding The via hole in the through hole; the fixing seat leans against the side of the negative electrode bus plate away from the insulating plate and has a plurality of receiving holes corresponding to the through hole; each power-taking circlip is stored in a corresponding receiving hole and welded to the negative electrode The manifold; each power-taking screw is welded to the positive manifold and passed through a corresponding through hole and received in a corresponding receiving hole.

Description

battery module

【Technical field】

The utility model relates to the technical field of power batteries, in particular to a battery module.

【Background technique】

Electric vehicles have been recognized by the society because of their energy-saving and environmental protection features. As the energy source of electric vehicles, power batteries directly affect the power, reliability, safety and economy of vehicles. At present, hundreds of cylindrical lithium-ion batteries are generally connected in series and parallel to form a battery module and then installed on the vehicle chassis. However, the existing battery module has problems such as unreliable battery connection and difficult replacement.

In view of this, it is necessary to provide a new type of battery module to overcome the above defects.

【Content of utility model】

The purpose of the utility model is to provide a battery module which makes the connection between the batteries more reliable and easy to take out.

In order to achieve the above purpose, the utility model provides a battery module, including a plurality of cylindrical batteries, a negative manifold, an insulating plate, a positive manifold, a fixing seat, a plurality of power-taking springs and a plurality of power-taking screws; The cylindrical battery includes a negative electrode casing and a positive electrode cap arranged at one end of the negative electrode casing, and a connecting post with an internal thread is provided on the side of the positive electrode cap away from the negative electrode casing; the negative electrode manifold is arranged opposite to the positive electrode manifold And a plurality of through holes are opened; the insulating plate is located between the negative electrode manifold and the positive electrode manifold and is provided with a plurality of via holes corresponding to the through holes; the fixing seat leans against the The negative bus plate is located on the side away from the insulating plate and has a plurality of receiving holes corresponding to the through holes; each power-taking snap ring is received in a corresponding receiving hole and is welded and electrically connected to the The negative bus plate; each electric screw is welded and electrically connected to the positive bus plate and passed through a corresponding through hole and a corresponding through hole to be accommodated in a corresponding receiving hole; each cylindrical battery is close to the connection One end of the post is accommodated in a corresponding receiving hole and held and electrically connected to a corresponding power-taking clip. The connecting post of each cylindrical battery is threaded and fixed with a corresponding power-taking screw and electrically connected.

In a preferred embodiment, each power-taking circlip includes a welding piece and a plurality of evenly spaced claw pieces extending from the edge of the welding piece and located on the same side of the welding piece; the welding piece is provided with a central hole; each A power-taking snap ring is welded to the negative electrode bus plate through the welding piece, holds the negative electrode casing through the claw piece, and is electrically connected to the negative electrode casing.

In a preferred embodiment, the connecting column is cylindrical and arranged coaxially with the negative electrode case; the receiving hole is cylindrical, and the through hole and the through hole are circular; the receiving The diameter of the hole corresponds to the negative electrode casing, the diameter of the through hole is larger than the diameter of the connecting post and smaller than the diameter of the receiving hole, and the diameter of the through hole is larger than the diameter of the connecting post and not larger than the diameter of the connecting post. The diameter of the through hole.

In a preferred embodiment, each receiving hole is provided with a plurality of limiting slots that are evenly distributed and arranged along the axial direction of the receiving hole, and the number and width of the limiting slots correspond to the claw pieces.

In a preferred embodiment, the number of claws extending from the edge of each welding piece is six, and each claw protrudes toward the central axis of the welding piece; The number of slots is six, and each claw piece is accommodated and limited in a corresponding limiting slot.

In a preferred embodiment, the welding sheet is circular, the central hole and the welding sheet are concentric circles, and the diameter of the central hole corresponds to the through hole.

In a preferred embodiment, the power-taking screw includes a head and a threaded portion; a plurality of fixing grooves corresponding to the through holes are provided on the side of the positive bus plate close to the insulating plate, and the fixing grooves The shape and size correspond to the head of the power-taking screw; each power-taking screw is welded to a corresponding fixing groove through the head and is screwed and fixed with a corresponding connecting column through the threaded part.

In the battery module provided by the utility model, the negative manifold and the positive manifold are arranged on the same side and are insulated from each other through an insulating plate; each cylindrical battery is provided with a connecting column with an internal thread, through which the connecting column is matched with the thread of the power-taking screw Electrically connected to the positive busbar; the negative shell of each cylindrical battery is held in a power-taking clip and electrically connected to the negative busbar; the above power-taking method not only enhances the connection reliability between cylindrical batteries , it is not easy to fall off when the vehicle vibrates, and the convenience of replacing a single cylindrical battery is also realized.

【Description of drawings】

Fig. 1 is an exploded schematic diagram of the battery module provided by the present invention.

FIG. 2 is a schematic cross-sectional view of a part of the structure of the battery module shown in FIG. 1 .

【detailed description】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

Please refer to Fig. 1 and Fig. 2, the utility model provides a battery module 100, including a plurality of cylindrical batteries 10, a negative busbar 20, an insulating plate 30, a positive busbar 40, a fixing seat 50, and a plurality of power-taking snap springs 60 and a plurality of power-taking screws 70.

Specifically, each cylindrical battery 10 includes a negative electrode casing 11 and a positive electrode cap 12 disposed at one end of the negative electrode casing 11, and a connecting post with an internal thread is provided on the side of the positive electrode cap 12 away from the negative electrode casing 11. 111. In this embodiment, the connecting column 111 is cylindrical and arranged coaxially with the negative electrode casing 11 .

Further, the negative bus plate 20 is arranged opposite to the positive bus plate 40 at intervals, the insulating plate 30 is located between the negative bus plate 20 and the positive bus plate 40 , and the fixing seat 50 abuts against The negative bus plate 20 is located on a side away from the insulating plate 30 . The negative bus plate 20 is provided with a plurality of through holes 21 distributed in a matrix; the insulating plate 30 is provided with a plurality of via holes 31 corresponding to the through holes 21; the positive bus plate 40 is close to the insulating plate A plurality of fixing grooves 41 corresponding to the through holes 31 are defined on one side of the housing 30 ; a plurality of receiving holes 51 corresponding to the through holes 21 are defined in the fixing base 50 . In this embodiment, the receiving hole 51 is cylindrical, the through hole 21 and the through hole 31 are circular; the diameter of the receiving hole 51 corresponds to the negative electrode case 11, and the through hole The diameter of the through hole 31 is larger than the diameter of the connecting post 11 but not larger than the diameter of the through hole 21 .

Further, each power-taking clip 60 is accommodated in a corresponding receiving hole 51 and welded to the negative bus plate 20 and electrically connected to the negative bus plate 20 . Each power-taking screw 70 is welded to a side of the positive busbar 40 close to the insulating plate 30 and is electrically connected to the positive busbar 40 . Specifically, each power-taking snap spring 60 includes a welding piece 61 and a plurality of evenly spaced claw pieces 62 extending from the edge of the welding piece 61 and located on the same side of the welding piece 61. The welding piece 61 It is welded to the negative electrode bus plate 20 and the welding piece 61 defines a central hole 611 . Each power-taking screw 70 includes a head 71 and a threaded portion 72 , the head 71 is welded to the positive bus plate 40 , and the threaded portion 72 can rotatably fit with the internal thread of the connecting post 111 . In this embodiment, the welding piece 61 is circular, the central hole 611 and the welding piece 61 are concentric circles and the diameter of the central hole 611 corresponds to the through hole 20; the fixing groove 41 The shape and size correspond to the head 71 of the electric screw 70 .

Further, each receiving hole 51 is provided with a plurality of limiting grooves 511 uniformly distributed along the axial direction of the receiving hole 51 , and the number and width of the limiting grooves 511 correspond to the claw pieces 62 . In this embodiment, the number of claw pieces 62 extending from the edge of each welding piece 61 is six, and each claw piece 62 protrudes toward the central axis of the welding piece 61; The number of limit slots 511 is six, and each claw piece 62 is accommodated and limited to a corresponding limit slot 511; the negative electrode casing 11 of each cylindrical battery 10 is clamped by a plurality of corresponding power-taking snap rings 60 In the claw piece 62.

During assembly, the head 71 of each power-taking screw 70 is fixedly welded in a corresponding fixing groove 41 , and the threaded portion 72 passes through a corresponding through hole 31 and a corresponding through hole 21 and is partially received in a corresponding receiving hole 51 . Each power-taking snap ring 60 is accommodated in a corresponding receiving hole 51 and the welding piece 61 is welded on the edge of a corresponding through hole 21, the central hole 611 of each welding piece 61 is opposite to a corresponding through hole 21, and the claw piece 62 limits It is located in a corresponding limiting slot 511 . One end of each cylindrical battery 10 close to the connecting column 111 is accommodated in a housing hole 51, and the negative electrode casing 11 of the cylindrical battery 10 is clamped and electrically connected to a power-taking snap ring 60 located in the housing hole 51. The connecting post 111 of the cylindrical battery 10 passes through a corresponding central hole 611 and is fixedly connected with the threaded portion 72 corresponding to a power-taking screw 70 through an internal thread.

In the battery module provided by the utility model, the negative manifold and the positive manifold are arranged on the same side and are insulated from each other through an insulating plate; each cylindrical battery is provided with a connecting column with an internal thread, through which the connecting column is matched with the thread of the power-taking screw Electrically connected to the positive busbar; the negative shell of each cylindrical battery is held in a power-taking clip and electrically connected to the negative busbar; the above power-taking method not only enhances the connection reliability between cylindrical batteries , it is not easy to fall off when the vehicle vibrates, and the convenience of replacing a single cylindrical battery is also realized.

The utility model is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (7)

1. A battery module, characterized in that: it includes a plurality of cylindrical batteries, a negative manifold, an insulating plate, a positive manifold, a fixing seat, a plurality of power-taking clip springs and a plurality of power-taking screws; each cylindrical battery includes The negative electrode casing and the positive electrode cap arranged at one end of the negative electrode casing, the side of the positive electrode cap away from the negative electrode casing is provided with a connecting column with internal threads; A plurality of through holes; the insulating plate is located between the negative bus plate and the positive bus plate and has a plurality of via holes corresponding to the through holes; the fixing seat is against the negative bus plate on the side away from the insulating plate and has a plurality of receiving holes corresponding to the through holes; each power-taking snap ring is received in a corresponding receiving hole and is welded and electrically connected to the negative bus plate; each electric screw is welded and electrically connected to the positive bus plate and passed through a corresponding through hole and a corresponding through hole is received in a corresponding receiving hole; each cylindrical battery is close to one end of the connecting column It is accommodated in a corresponding receiving hole and held and electrically connected to a corresponding power-taking clip. The connecting post of each cylindrical battery is threaded and fixed with a corresponding power-taking screw and electrically connected. 2. The battery module according to claim 1, wherein each power-taking retainer includes a welding piece and a plurality of evenly spaced claws extending from the edge of the welding piece and located on the same side of the welding piece; The welding piece is provided with a central hole; each power-taking circlip is welded to the negative electrode bus plate through the welding piece and holds the negative electrode casing through the claw piece and is electrically connected to the negative electrode casing . 3. The battery module according to claim 2, characterized in that: the connecting column is cylindrical and arranged coaxially with the negative electrode casing; the receiving hole is cylindrical, and the through hole, the The through holes are all circular; the diameter of the receiving hole corresponds to the negative electrode casing, the diameter of the through hole is larger than the diameter of the connecting column and smaller than the diameter of the receiving hole, and the diameter of the through hole is larger than The diameter of the connecting post is not larger than the diameter of the through hole. 4. The battery module according to claim 3, characterized in that: each receiving hole is provided with a plurality of limiting slots that are evenly distributed and arranged along the axial direction of the receiving hole, the number and width of the limiting slots corresponding to the claw piece. 5. The battery module according to claim 4, wherein the number of claws extending from the edge of each welding sheet is six, and each claw protrudes toward the central axis of the welding sheet ; The number of limit slots opened in each receiving hole is six, and each claw piece is accommodated and limited in a corresponding limit slot. 6. The battery module according to claim 3, wherein the welding piece is circular, the central hole and the welding piece are concentric circles, and the diameter of the central hole corresponds to the through hole . 7. The battery module according to claim 1, wherein: the power-taking screw includes a head and a threaded portion; the side of the positive bus plate close to the insulating plate has a plurality of holes corresponding to the The fixing groove of the through hole, the shape and size of the fixing groove correspond to the head of the power-taking screw; each power-taking screw is welded to a corresponding fixing groove through the head and threadedly matched with a corresponding connecting column through the threaded part fixed.