CN206471385U - A kind of battery modules - Google Patents

Abstract

The utility model provides a battery module, which includes a first storage plate, a second storage plate, a positive busbar, a negative busbar, an elastic connecting piece and a plurality of batteries; the first storage plate is provided with a plurality of storage slots, A mounting hole with an internal thread is provided in each receiving groove; the second receiving plate includes a third surface and a fourth surface opposite to each other and is provided with a plurality of receiving holes; the positive busbar includes a main body and protrudes from the main body A plurality of hollow connecting columns formed; a plurality of via holes are opened in the negative busbar; a plurality of through holes are opened in the elastic connecting piece and include a plurality of spaced claws extending from the edge of each through hole; The main body leans against the fourth surface and each connecting column is accommodated in a corresponding receiving hole; the negative bus bar leans against the third surface, and the elastic connecting piece leans against and is electrically connected to the negative bus bar, each A plurality of claw pieces extending from the edge of the through hole pass through a corresponding through hole and are accommodated in a corresponding receiving hole.

Description

A battery module

【Technical field】

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

【Background technique】

Under the current background that new energy vehicles become the future development trend, pure electric vehicles have attracted the attention and attention of the state and government because of their advantages in energy saving and environmental protection, and the electric vehicle industry has shown explosive growth. As one of the three core components of electric vehicles, the battery is one of the indicators for evaluating the performance of electric vehicles, and it is also the source that most directly affects the power and endurance of electric vehicles.

The existing electric vehicle batteries are first made into a single module by grouping single cells, and then the single module is integrated into a whole battery pack, and the connection between the modules is mainly through bolts or welding. The way to achieve fast connection, to ensure the reliability and safety of the connection, but in this case, the replacement of the battery module has become a relatively big problem, and the battery can only be replaced by directly replacing the entire battery pack. .

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 that realizes the independence of small unit modules, can be quickly plugged and installed, and further improves the replacement efficiency.

In order to achieve the above purpose, the utility model provides a battery module, including a first receiving plate, a second receiving plate, a positive busbar, a negative busbar, an elastic connecting piece and a plurality of batteries;

The first receiving plate includes opposite first surfaces and second surfaces, the first surface is provided with a plurality of receiving grooves, and a mounting hole with an internal thread is opened in each receiving groove; the second receiving plate It includes a third surface and a fourth surface opposite to each other, and is provided with a plurality of receiving holes penetrating through the third surface and the fourth surface; the positive busbar includes a main body and protrudes from the main body. A plurality of hollow connection columns formed; the negative busbar is provided with a plurality of via holes; the elastic connecting sheet is provided with a plurality of through holes and includes a plurality of interval distribution extending from the edge of each through hole Claw piece;

The main body leans against the fourth surface and each connecting column is accommodated in a corresponding receiving hole; the negative busbar leans against the third surface, and the elastic connecting piece leans against and electrically is permanently connected to the negative busbar, and a plurality of claws extending from the edge of each through hole pass through a corresponding through hole and are accommodated in a corresponding receiving hole;

Each battery includes a negative electrode casing and a positive electrode cap located at one end of the negative electrode casing. The end of the negative electrode casing away from the positive electrode cap is welded with a screw, and the positive electrode cap is welded with a crown spring; the negative electrode casing is away from the positive electrode cap. One end of the positive electrode cap is accommodated in a corresponding receiving groove and fixedly connected by screwing into the mounting hole; the end of the negative electrode casing close to the positive electrode cap passes through the corresponding through hole and the passage in turn. The hole is accommodated in a corresponding receiving hole, the crown spring is inserted into a corresponding connecting column and is electrically connected with the positive bus bar, and the negative housing is electrically connected with the claw piece.

In a preferred embodiment, the second receiving plate is provided with a plurality of first fixing holes, the main body of the positive busbar is provided with a plurality of second fixing holes, and the negative busbar is provided with a plurality of The third fixing hole, the elastic connecting piece is provided with a plurality of fourth fixing holes; the number of the first fixing hole, the second fixing hole, the third fixing hole and the fourth fixing hole are the same and correspondingly distributed; Through the fourth fixing hole, the third fixing hole, the first fixing hole and the second fixing hole, the elastic connecting piece, the negative busbar and the positive busbar are fixedly connected to the second receiving plate.

In a preferred embodiment, the positive busbar further includes a positive output protrusion extending outward from one side of the main body, and the negative busbar further includes a negative output protrusion; the positive output protrusion A first through hole is opened on the negative electrode output convex part, and a second through hole is opened on the negative output convex part.

In a preferred embodiment, the third surface is provided with a limiting groove, the negative busbar and the elastic connecting piece are sequentially accommodated in the limiting groove, and the elastic connecting piece is located away from the third surface side.

In a preferred embodiment, the limit groove is provided with a gap for the negative output protrusion to pass through.

In a preferred embodiment, the accommodating groove is a blind hole with a circular cross section, and a plurality of the accommodating grooves are arranged in a matrix; the installation hole is located at the center of each accommodating groove.

In a preferred embodiment, the numbers of the receiving holes, the connecting posts, the via holes and the through holes are the same and correspondingly distributed; the receiving holes, the via holes and the through holes have the same diameter are circular and distributed in a matrix; the connecting columns are hollow cylindrical and distributed in a matrix.

In a preferred embodiment, the second surface is provided with a handle fitting groove, and a plurality of auxiliary grooves connected thereto and evenly distributed are opened on the edge of the handle fitting groove, and a card is formed between two adjacent auxiliary grooves. edge.

In a preferred embodiment, the handle matching groove is circular, the number of the auxiliary grooves is four, and the number of the card edges is four.

The battery module provided by the utility model is different from the prior art in which the batteries are grouped together and each module is locked together through bolts, etc., but each small module is used as a unit to improve the installation of the battery. and replacement efficiency. The positive and negative connections between the crown spring and the elastic sheet not only ensure the reliability of the battery plug-in connection, but also ensure the feasibility and convenience of battery module replacement.

【Description of drawings】

Fig. 1 is a three-dimensional structural view of the partially assembled battery module provided by the present invention.

FIG. 2 is a three-dimensional structural view of the battery module shown in FIG. 1 after the first receiving plate is assembled with a plurality of batteries.

FIG. 3 is a perspective structural view of a first receiving plate of the battery module shown in FIG. 1 .

FIG. 4 is an exploded view of a part of the structure of the battery module shown in FIG. 1 .

FIG. 5 is a three-dimensional structure diagram of a battery 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 Figure 1, the utility model provides a new type of battery module 100, including a first receiving plate 10, a second receiving plate 20, a positive busbar 30, a negative busbar 40, an elastic connecting piece 50 and a plurality of batteries 60.

Please refer to FIG. 2 and FIG. 3 , the first receiving board 10 includes a first surface 11 and a second surface 12 opposite to the first surface 11 . The first surface 11 defines a plurality of receiving grooves 111 , and each receiving groove 111 defines a mounting hole 1111 therein. In this embodiment, the receiving groove 111 is a blind hole with a circular cross section, a plurality of the receiving grooves 111 are distributed in a matrix, and the mounting hole 1111 is located at the center of each receiving groove 111 and has an internal thread. Further, the second surface 12 is provided with a handle fitting groove 121 and a plurality of auxiliary grooves 122 connected thereto and evenly distributed are opened on the edge of the handle fitting groove 121, and a card is formed between two adjacent auxiliary grooves 122. edge123. It can be understood that the handle matching groove 121 can allow the matching handle part to be screwed in and locked with the card edge 123, and the first receiving plate 10 can be easily lifted or held up by the unscrewed part of the handle. and perform rotation. In this embodiment, the handle matching groove 121 is circular, the number of the auxiliary grooves 122 is four, and the number of the card edges 123 is four.

Please refer to FIG. 4 , the second receiving plate 20 includes a third surface 21 and a fourth surface 22 opposite to the third surface 21 , and the third surface 21 defines a limiting groove 211 . The second receiving plate 20 also defines a plurality of receiving holes 23 and a plurality of first fixing holes 24 communicating with the limiting groove 211 and the fourth surface 22 . The positive busbar 30 includes a main body 31 , a plurality of hollow connecting posts 32 protruding from the main body 31 , and a plurality of second fixing holes 33 penetrating through the main body 31 . The negative bus bar 40 includes a plurality of via holes 41 and a plurality of third fixing holes 42 passing through the negative bus bar 40 . The elastic connecting piece 50 is provided with a plurality of through holes 51 and a plurality of fourth fixing holes 52 passing through the elastic connecting piece 50 , and includes a plurality of spaced apart claws extending from the edge of each through hole 51 53. Specifically, the numbers of the receiving holes 23 , the connecting posts 32 , the via holes 41 and the through holes 51 are the same and distributed accordingly. In this embodiment, the receiving holes 23 , the via holes 41 and the through holes 51 are circular with the same diameter and are distributed in a matrix; the connecting columns 32 are hollow cylinders and are distributed in a matrix.

During assembly, the positive busbar 30 is arranged on the fourth surface 22; the negative busbar 40 and the elastic connecting piece 50 are sequentially accommodated in the limiting groove 211, that is, the negative busbar 40 is located between the elastic connecting piece 50 and the second receiving plate 20 . Specifically, the main body 31 of the positive electrode busbar 30 abuts against the fourth surface 22 of the second receiving plate 20 , and each connecting column 32 is received in a corresponding receiving hole 23 . The negative bus bar 40 abuts against the third surface 21 , the elastic connecting piece 50 abuts against and is electrically connected to the negative bus bar 40 and is located on a side away from the third surface 21 A plurality of claws 53 extending from the edge of each through hole 51 pass through the corresponding one of the through holes 41 and are accommodated in the corresponding one of the receiving holes 23 .

Further, the number of the first fixing hole 24, the second fixing hole 33, the third fixing hole 42 and the fourth fixing hole 52 are the same and correspondingly distributed, and the screws pass through the fourth fixing hole in sequence. The fixing hole 52, the third fixing hole 42, the first fixing hole 24 and the second fixing hole 33 make the elastic connecting piece 50, the negative busbar 40 and the positive busbar 30 It is fixedly connected to the second receiving plate 20 .

Please refer to FIG. 5 , the battery 60 includes a negative electrode casing 61 and a positive electrode cap 62 located at one end of the negative electrode casing 61 . A screw 611 is welded to the end of the negative electrode casing 61 away from the positive electrode cap 62 , and a crown spring 621 is welded to the center of the positive electrode cap 62 . In this embodiment, the crown spring 621 includes a top arc portion 6211, a bottom arc portion 6212, and a plurality of elastic arms connected to the top arc portion 6211 and the bottom arc portion 6212 and arranged at intervals. 6213. The bottom arc portion 6212 is welded to the positive electrode cap 51, and the elastic arm 6213 is arc-shaped and bends in a direction away from the central axes of the top arc portion 6211 and the bottom arc portion 6212. .

The end of the negative electrode casing 61 of each battery 60 away from the positive electrode cap 62 is accommodated in a corresponding receiving groove 111 and screwed into the installation hole 1111 by a screw 611 to be fixedly connected. One end of the negative electrode case 61 close to the positive electrode cap 62 passes through the corresponding through hole 51 and the through hole 41 to be accommodated in a corresponding receiving hole 23; the crown spring 621 is inserted into a corresponding connecting column 32 and electrically connected to the positive bus bar 30 , and the negative casing 61 is electrically connected to the claw piece 53 .

Further, the positive busbar 30 further includes a positive output protrusion 34 extending outward from one side of the main body 31 , and the positive output protrusion 34 defines a first through hole 341 . The negative busbar 40 further includes a negative output convex portion 43 , and the negative output convex portion 43 defines a second through hole 431 . In this embodiment, the number of the positive output protrusions 34 is two, and each positive output protrusion 34 is provided with one of the first through holes 341; the number of the negative output protrusions 43 is two, each Each negative output convex portion 43 is provided with one second through hole 431 . Further, the limiting slot 211 is provided with a gap for the negative output protrusion 43 to pass through.

The battery module provided by the utility model is different from the prior art in which the batteries are grouped together and each module is locked together through bolts, etc., but each small module is used as a unit to improve the installation of the battery. and replacement efficiency. The positive and negative connections between the crown spring and the elastic sheet not only ensure the reliability of the battery plug-in connection, but also ensure the feasibility and convenience of battery module replacement.

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 the general concept defined by the claims and the equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (9)

1. A battery module, characterized in that: comprising a first receiving plate, a second receiving plate, a positive busbar, a negative busbar, an elastic connecting piece and a plurality of batteries; The first receiving plate includes opposite first surfaces and second surfaces, the first surface is provided with a plurality of receiving grooves, and a mounting hole with an internal thread is opened in each receiving groove; the second receiving plate It includes a third surface and a fourth surface opposite to each other, and is provided with a plurality of receiving holes penetrating through the third surface and the fourth surface; the positive busbar includes a main body and protrudes from the main body. A plurality of hollow connection columns formed; the negative busbar is provided with a plurality of via holes; the elastic connecting sheet is provided with a plurality of through holes and includes a plurality of interval distribution extending from the edge of each through hole Claw piece; The main body leans against the fourth surface and each connecting column is accommodated in a corresponding receiving hole; the negative busbar leans against the third surface, and the elastic connecting piece leans against and electrically is permanently connected to the negative busbar, and a plurality of claws extending from the edge of each through hole pass through a corresponding through hole and are accommodated in a corresponding receiving hole; Each battery includes a negative electrode casing and a positive electrode cap located at one end of the negative electrode casing. The end of the negative electrode casing away from the positive electrode cap is welded with a screw, and the positive electrode cap is welded with a crown spring; the negative electrode casing is away from the positive electrode cap. One end of the positive electrode cap is accommodated in a corresponding receiving groove and fixedly connected by screwing into the mounting hole; the end of the negative electrode casing close to the positive electrode cap passes through the corresponding through hole and the passage in turn. The hole is accommodated in a corresponding receiving hole, the crown spring is inserted into a corresponding connecting column and is electrically connected with the positive bus bar, and the negative housing is electrically connected with the claw piece. 2. The battery module according to claim 1, wherein the second receiving plate is provided with a plurality of first fixing holes, and the main body of the positive busbar is provided with a plurality of second fixing holes, The negative busbar is provided with a plurality of third fixing holes, and the elastic connecting piece is provided with a plurality of fourth fixing holes; the first fixing hole, the second fixing hole, the third fixing hole and the fourth fixing hole The numbers are the same and distributed correspondingly; through the fourth fixing hole, the third fixing hole, the first fixing hole and the second fixing hole in sequence, the elastic connecting piece, the negative busbar and the positive busbar are fixed connected to the second receiving plate. 3. The battery module according to claim 1, wherein the positive busbar further comprises a positive output convex part extending outward from one side of the main body, and the negative busbar further comprises Negative output convex part; the positive output convex part is opened with a first through hole, and the negative output convex part is opened with a second through hole. 4. The battery module according to claim 3, wherein a limiting groove is provided on the third surface, and the negative busbar and the elastic connecting piece are sequentially accommodated in the limiting groove, and the The elastic connecting piece is located on a side away from the third surface. 5 . The battery module according to claim 4 , wherein the limiting groove is provided with a notch for the output protrusion of the negative electrode to pass through. 5 . 6. The battery module according to claim 1, characterized in that: the receiving slot is a blind hole with a circular cross section, and a plurality of the receiving slots are arranged in a matrix; the mounting holes are located in each receiving slot center of. 7. The battery module according to claim 1, characterized in that: the numbers of the receiving holes, the connecting posts, the via holes and the through holes are the same and distributed correspondingly; the receiving holes, the The via holes and the through holes are circular with the same diameter and distributed in a matrix; the connecting posts are hollow cylindrical and distributed in a matrix. 8. The battery module according to claim 1, wherein a handle matching groove is opened on the second surface, and a plurality of auxiliary grooves connected thereto and evenly distributed are opened on the edge of the handle matching groove, and the corresponding A card edge is formed between the two adjacent auxiliary slots. 9 . The battery module according to claim 8 , wherein the handle matching groove is circular, the number of the auxiliary grooves is four, and the number of the card edges is four.