CN213043014U

CN213043014U - Busbar of lithium battery module

Info

Publication number: CN213043014U
Application number: CN202120132256.3U
Authority: CN
Inventors: 纪玉鹏; 何成峰; 赵传城
Original assignee: Shandong Cosic Weineng New Energy Power System Co ltd
Current assignee: Shandong aerospace Weineng Technology Co.,Ltd.
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-04-23
Anticipated expiration: 2031-01-19

Abstract

The utility model discloses a busbar of lithium battery module, the power distribution box comprises a box body, the bottom surface rigid coupling of box has electric core to place the board, electric core standing groove has been seted up at the top surface middle part of electric core placing the board, the both sides face middle part of box is equipped with fixed subassembly, the short screw rod in the fixed subassembly is threaded connection respectively on the both sides face of insulating casing, the top surface rigid coupling in the insulating casing has a plurality of spliced poles, first cylinder hole has all been seted up at the bottom surface middle part of spliced pole, the bottom surface of first cylinder hole all rigid coupling has the spring, the other end of spring all rigid coupling is in a side face middle part of connecting plate, the connecting plate passes through arc slider sliding connection in first cylinder hole, the top surface one end edge of insulating casing rigid coupling has first protective housing, be equipped with the wiring subassembly in the first; the utility model discloses avoid the water conservancy diversion inefficacy to arouse the thermal runaway, improve the life of lithium cell module, practice thrift cost, assembly speed is fast, efficient.

Description

Busbar of lithium battery module

Technical Field

The utility model relates to a technique and field of busbar especially relate to a busbar of lithium cell module.

Background

The busbar is used as a connection mode of the incoming lines, so that the contact area is increased, the energy consumption is reduced, and the temperature rise is reduced; compared with a traditional wiring mode, the bus bar is good in universality, strong in practicability, safe, reliable, time-saving, simple and convenient, made of pure copper, good in electric conductivity and low in contact resistance. The high-voltage wire in the existing battery module is independently separated from the bus bar of the battery module, and the high-voltage wire and the bus bar need to be connected through a fastening bolt to conduct overcurrent; however, when the battery module vibrates for a long time, the bolt is in a loosening risk, so that thermal runaway caused by flow guide failure can be caused, and the service life of the lithium battery module is shortened; meanwhile, the bolt fixing mode is high in cost, low in assembling speed and low in efficiency.

Disclosure of Invention

The utility model aims at providing a busbar of lithium battery module in order to solve the not good shortcoming of practicality that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a bus bar of a lithium battery module comprises a box body, wherein the box body is a rectangular box which is horizontally placed, the bottom surface of the box body is fixedly connected with a plurality of electric core placing plates, the middle part of the top surface of each electric core placing plate is provided with an electric core placing groove, the middle parts of two side surfaces of the box body are provided with fixing components, a short screw rod in each fixing component is respectively in threaded connection with the two side surfaces of an insulating shell, the top surface in the insulating shell is fixedly connected with a plurality of connecting columns, the middle part of the bottom surface of each connecting column is provided with a first cylindrical hole, the bottom surface of each first cylindrical hole is fixedly connected with a spring, the other end of each spring is fixedly connected with the middle part of one side surface of the connecting plate, the connecting plate is in sliding connection with the first cylindrical holes through arc-shaped sliders, a first protective shell is fixedly connected at the edge of one end of the top, the wiring assembly is electrically connected with the bus bar through a lead.

Preferably, the fixing component comprises a fixing plate, a first supporting plate, a second supporting plate, a movable plate, a handle, a connecting rod and a short screw rod, first threaded holes are formed in the middle parts of two side surfaces of the insulating shell, each first threaded hole is in threaded connection with a short screw rod, the other end of each short screw rod is fixedly connected with a connecting rod, the middle parts of two side surfaces of the box body are symmetrically and fixedly connected with a first supporting plate and a second supporting plate, a fixed plate is rotationally connected between each first supporting plate and each second supporting plate through a short shaft, one end of the top surface of each fixed plate is provided with a strip-shaped groove, and every the bar groove all runs through the fixed plate corresponding with it, every the equal activity of bar inslot runs through there is the connecting rod, every the equal rigid coupling of the other end of connecting rod has the fly leaf, every equal rigid coupling in a side middle part of fly leaf has the handle.

Preferably, the wiring assembly comprises a screw rod, a circular plate and a second protective shell, wherein a second cylindrical hole is formed in the middle of one side face of the first protective shell, the second protective shell is fixedly connected to the middle of the top face of the first protective shell, a third cylindrical hole is formed in the middle of the top face of the second protective shell, a second threaded hole is formed in the middle of the bottom face of the third cylindrical hole, the screw rod is connected to the second threaded hole in an inner threaded mode, the circular plate is fixedly connected to the top face of the screw rod and is connected to the third cylindrical hole in a sliding mode, a cross-shaped groove is formed in the middle of the top face of the circular plate, a cylindrical groove is formed in one side wall of the second cylindrical hole, and the cylindrical groove is connected.

Preferably, the bottom of the cylindrical groove is fixedly connected with a copper sheet, and the copper sheet is electrically connected with the bus bar through a lead.

Preferably, arc-shaped grooves are symmetrically formed in the inner side wall of the first cylindrical hole, arc-shaped sliding blocks are connected to the inner side wall of each arc-shaped groove in a sliding mode, and the inner wall of each arc-shaped sliding block is fixedly connected to the outer wall of the connecting plate.

Preferably, the spring is in its original length in a natural state.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a mutual cooperation of fixed plate, first backup pad, second backup pad, fly leaf, handle, connecting rod, stub bar is used, is convenient for with the busbar rigid coupling at the top of electric core, avoids the long-time removal of lithium cell module to lead to the phenomenon that the busbar becomes flexible and drops; the spring and the connecting plate are matched with each other for use, so that the connecting plate is convenient to contact with the electrical anode, the phenomenon of thermal runaway caused by flow guide failure is avoided, the service life of the lithium battery module is prolonged, the assembling speed is high, and the efficiency is high;

2. through the use of mutually supporting of lead screw, circular slab, second protective housing, copper sheet, the lithium battery module of being convenient for is electrically conductive with the outside to the use of the lithium battery module of being convenient for.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limitation.

In the drawings:

fig. 1 is a schematic view of a front view angle of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic structural view of a side view angle of the present invention;

fig. 4 is a cross-sectional view of a fixing plate of the present invention;

FIG. 5 is a schematic structural view of the wiring assembly of the present invention;

FIG. 6 is a partial cross-sectional view of the overall appearance of the present invention;

number in the figure: 1. a box body; 2. an insulating housing; 3. a bus bar; 4. a first protective case; 5. a fixing plate; 6. a battery cell placing plate; 7. a spring; 8. a connecting plate; 9. an arc-shaped sliding block; 10. connecting columns; 11. a first support plate; 12. a second support plate; 13. a movable plate; 14. a handle; 15. a connecting rod; 16. a short screw rod; 17. a lead screw; 18. a circular plate; 19. a second protective shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-6, a busbar of a lithium battery module comprises a box body 1, wherein the box body 1 is a horizontally placed rectangular box, a plurality of battery cell placing plates 6 are fixedly connected to the bottom surface of the box body 1, and a battery cell placing groove is formed in the middle of the top surface of each battery cell placing plate 6, so that the battery cells can be conveniently placed; the middle parts of the two side surfaces of the box body 1 are respectively provided with a fixing component, so that the bus bar 3 can be conveniently fixed, and the lithium battery module can be conveniently conducted; the short screw rods 16 in each fixing assembly are respectively in threaded connection with two side faces of the insulating shell 2, a plurality of connecting columns 10 are fixedly connected to the top face in the insulating shell 2, a first cylindrical hole is formed in the middle of the bottom face of each connecting column 10, springs 7 are fixedly connected to the bottom faces of the first cylindrical holes, the other end of each spring 7 is fixedly connected to the middle of one side face of the connecting plate 8, and the springs 7 are in original lengths in a natural state, so that the connecting plate 8 is in close contact with the positive electrode of a battery cell, the phenomenon of thermal runaway caused by flow guide failure is avoided, and the service life of a lithium battery module is prolonged; the connecting plate 8 is connected in the first cylindrical hole in a sliding mode through the arc-shaped sliding block 9, the connecting plate 8 is conductive, the first protective shell 4 is fixedly connected to the edge of one end of the top face of the insulating shell 2, the lead screw 17 is convenient to leak electricity, the phenomenon of short circuit or electric shock is avoided, and the use of the lithium battery module is facilitated; and be equipped with the wiring subassembly in the first protecting sheathing 4, be convenient for the wiring, the wiring subassembly passes through wire and busbar 3 electric connection, the circulation of the electric current of being convenient for.

In the utility model, the fixing component comprises a fixing plate 5, a first supporting plate 11, a second supporting plate 12, a movable plate 13, a handle 14, a connecting rod 15 and a short screw rod 16, wherein the middle parts of two side surfaces of an insulating shell 2 are provided with first threaded holes, each first threaded hole is internally and uniformly in threaded connection with the short screw rod 16, the other end of each short screw rod 16 is fixedly connected with the connecting rod 15, the middle parts of two side surfaces of a box body 1 are symmetrically and fixedly connected with the first supporting plate 11 and the second supporting plate 12, a fixing plate 5 is rotatably connected between each first supporting plate 11 and the second supporting plate 12 through a short shaft, one end of the top surface of each fixing plate 5 is provided with a bar-shaped groove, each bar-shaped groove penetrates through the corresponding fixing plate 5, the connecting rod 15 is movably penetrated in each bar-shaped groove, the other end of each connecting rod 15 is fixedly connected with the movable plate 13, the middle, the movable plate 13 is easily rotated, thereby easily fixing the bus bar 3.

The utility model discloses in, the wiring subassembly includes lead screw 17, circular slab 18, second protective housing 19, second cylinder hole has been seted up at a side middle part of first protective housing 4, the top surface middle part rigid coupling of first protective housing 4 has second protective housing 19, third cylinder hole has been seted up at the top surface middle part of second protective housing 19, second screw hole has been seted up at the bottom surface middle part in third cylinder hole, second screw hole female connection has lead screw 17, lead screw 17's top surface rigid coupling has

circular slab

18, and 18 sliding connection of circular slab is downthehole at third cylinder, the cross recess has been seted up at the top surface middle part of circular slab 18, the cylinder groove has been seted up on the lateral wall in second cylinder hole, and the cylinder groove has lead screw 17 to connect, the bottom rigid coupling in cylinder groove has the copper sheet, and the copper sheet passes through wire and 3 electric connection of busbar, the circulation of.

The utility model discloses in, the arc wall has been seted up to the inside wall symmetry in first cylinder hole, and equal sliding connection has arc slider 9 in every arc wall, and the inner wall rigid coupling of every arc slider 9 is on the outer wall of connecting plate 8, the connecting plate 8's of being convenient for removal.

The working principle is as follows: when the utility model is used, the battery cell is placed in the battery cell placing groove on the battery cell placing plate 6 in the box body 1; the insulating housing 2 is then placed on top of the tank 1.

Rotate fixed plate 5, make fixed plate 5 run through on the outer wall of connecting rod 15 through the bar groove, rotate handle 14, the rotation through handle 14 drives connecting rod 15 and rotates to drive short lead screw 16 and rotate, make connecting rod 15 horizontal migration through the rotation of short lead screw 16, and then drive fly leaf 13 and remove, thereby make fly leaf 13 and fixed plate 5 in close contact with, through the fixed subassembly at 2 both ends of insulating casing with the top of insulating casing 2 rigid coupling at box 1.

Simultaneously, the first cylinder hole of fixed spliced pole 10 is located the anodal department of the electric core corresponding with it on the 3 bottom surfaces of busbar, and the anodal extrusion connecting plate 8 of electric core to connecting plate 8 extrusion spring 7 makes spring 7 compressed, because spring 7 need resume elastic deformation, thereby spring 7 drives connecting plate 8 and moves down, thereby makes connecting plate 8 and the more inseparable contact of electric core positive pole, the electric current circulation of being convenient for.

Connect the external conductor in the second cylinder hole again in the dismantlement, use the rotatory circular plate 18 of cross plum blossom sword, and then drive lead screw 17 and rotate, the rotation through lead screw 17 drives external conductor downstream, thereby with external conductor and copper sheet contact, make the external conductor rigid coupling on the copper sheet simultaneously, the electric current circulation of being convenient for, wherein, the electric current in every electric core flows through the positive pole, earlier flow through 8 circulation channels spring 7 of connecting plate, flow through spring 7 to busbar 3, flow through the wire to the copper sheet, flow out lithium battery module through the external conductor at last.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a busbar of lithium battery module, includes box (1), its characterized in that: the box body (1) is a rectangular box placed horizontally, a plurality of battery cell placing plates (6) are fixedly connected to the bottom surface of the box body (1), a battery cell placing groove is formed in the middle of the top surface of each battery cell placing plate (6), fixing assemblies are arranged in the middle of two side surfaces of the box body (1), a short lead screw (16) in each fixing assembly is respectively in threaded connection with two side surfaces of an insulating shell (2), a plurality of connecting columns (10) are fixedly connected to the top surface in the insulating shell (2), a first cylindrical hole is formed in the middle of the bottom surface of each connecting column (10), springs (7) are fixedly connected to the bottom surfaces of the first cylindrical holes, the other end of each spring (7) is fixedly connected to the middle of one side surface of a connecting plate (8), and the connecting plate (8) is slidably connected to the first cylindrical holes through an arc-shaped sliding block (9), the edge of one end of the top surface of the insulating shell (2) is fixedly connected with a first protective shell (4), a wiring assembly is arranged in the first protective shell (4), and the wiring assembly is electrically connected with the busbar (3) through a wire.

2. The busbar for lithium battery modules as claimed in claim 1, wherein: the fixing component comprises a fixing plate (5), a first supporting plate (11), a second supporting plate (12), a movable plate (13), a handle (14), a connecting rod (15) and a short screw rod (16), wherein first threaded holes are formed in the middle parts of two side faces of the insulating shell (2), each first threaded hole is internally and uniformly in threaded connection with the short screw rod (16), each other end of the short screw rod (16) is fixedly connected with the connecting rod (15), the middle parts of the two side faces of the box body (1) are symmetrically and fixedly connected with the first supporting plate (11) and the second supporting plate (12), each first supporting plate (11) and the second supporting plate (12) are rotatably connected with the fixing plate (5) through short shafts, each strip-shaped groove is formed in one end of the top face of the fixing plate (5) and penetrates through the fixing plate (5) corresponding to the strip-shaped groove, and each strip-shaped groove is movably penetrated with the connecting rod (15), the other end of each connecting rod (15) all is fixedly connected with a movable plate (13), and the middle part of one side surface of each movable plate (13) is fixedly connected with a handle (14).

3. The busbar for lithium battery modules as claimed in claim 1, wherein: the wiring assembly comprises a lead screw (17), a circular plate (18) and a second protective shell (19), a second cylindrical hole is formed in the middle of one side face of the first protective shell (4), the second protective shell (19) is fixedly connected to the middle of the top face of the first protective shell (4), a third cylindrical hole is formed in the middle of the top face of the second protective shell (19), a second threaded hole is formed in the middle of the bottom face of the third cylindrical hole, the lead screw (17) is connected to the inner thread of the second threaded hole in a threaded manner, the circular plate (18) is fixedly connected to the top face of the lead screw (17), the circular plate (18) is slidably connected to the inside of the third cylindrical hole, a cross-shaped groove is formed in the middle of the top face of the circular plate (18), a cylindrical groove is formed in one side wall of the second cylindrical hole, and the lead screw (.

4. The busbar for lithium battery modules as claimed in claim 3, wherein: the bottom of the cylindrical groove is fixedly connected with a copper sheet, and the copper sheet is electrically connected with the bus bar (3) through a lead.

5. The busbar for lithium battery modules as claimed in claim 1, wherein: arc-shaped grooves are symmetrically formed in the inner side wall of the first cylindrical hole, arc-shaped sliding blocks (9) are connected in the arc-shaped grooves in a sliding mode, and the inner wall of each arc-shaped sliding block (9) is fixedly connected to the outer wall of the connecting plate (8).

6. The busbar for lithium battery modules as claimed in claim 1, wherein: the spring (7) is in the original length under the natural state.