CN210897438U

CN210897438U - Welding-free battery module bracket, battery module and battery pack

Info

Publication number: CN210897438U
Application number: CN202020051969.2U
Authority: CN
Inventors: 李果; 李胜斌; 张海燕
Original assignee: Shenzhen Yichengxin Technology Co ltd
Current assignee: Anhui Bike New Power Technology Co.,Ltd.
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-06-30
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses an exempt from to weld support for battery module, include: the support main body is used for being arranged at two ends of the battery, a plurality of accommodating holes for accommodating one end of the battery are formed in the support main body, the periphery of each accommodating hole protrudes inwards in the radial direction to form a stop block for limiting the axial position of the battery, and a leakage area for leaking a battery electrode is reserved between the stop block and the periphery of each accommodating hole; the first fastener is used for detachably connecting the bracket main bodies positioned at the two ends of the battery; and the conducting plate is arranged on one side of the bracket main body, which is far away from the battery, the conducting plate is provided with a plurality of conducting elastic sheets, one end of each conducting elastic sheet is connected with the conducting plate, and the other end of each conducting elastic sheet arches towards the leakage area to form an elastic arched part which is abutted against the electrode of the battery. The utility model discloses still disclose a exempt from to weld battery module and group battery. The utility model provides a exempt from to weld support, battery module and group battery for battery module, the equipment with disassemble simple high-efficient, electric conductivity is good, the reliability is high.

Description

Welding-free battery module bracket, battery module and battery pack

Technical Field

The utility model relates to a battery technology field, specifically speaking relates to a exempt from to weld support, battery module and group battery for battery module.

Background

Lead acid batteries are being gradually replaced by energy sources such as lithium batteries due to their high pollution and low energy density. In fields such as electric bicycle, electric tricycle, lithium cell module is because the space restriction of automobile body itself, generally places a plurality of cylindrical lithium cell and carries out the series-parallel connection in a lithium cell module. Compare electric automobile type cylindrical battery module with the lithium cell full parallel in single lithium cell module, with the mode of a plurality of good lithium cell module series connections that connect in parallel again, this carries out the mode of connecting in series and parallel in a lithium cell module and can adapt to the space of more small volume. However, the series-parallel connection in one lithium battery module requires a plurality of electrode tabs separated from each other.

The preparation of prior art's cylindrical lithium battery module needs put the lithium cell earlier, then attaches the connection piece and welds one by one on lithium cell electrode, and efficiency is lower, and welding process exists adjacent connection piece one by one because of the risk of sliding and contact short circuit. If the local electric core quality problem takes place for the lithium cell module after the welding, need repair battery module in-process brute force and destroy welding circuit, easily cause the destruction of the original structure of lithium cell and further cause the short circuit even, this welding mode still can cause extra influence to the old and useless recovery processing of welding battery module simultaneously.

Chinese patent document application No. 201821037378.9 discloses a battery cell module and a battery module structure, and the battery cell module includes: a lower bracket; an upper bracket; a plurality of cells; a positive plate; a negative plate; an insulating plate. This battery module structure includes: the base plate is provided with a plurality of first connecting holes; the top plate is provided with a plurality of second connecting holes; the battery cell modules are stacked, the lower ends of the battery cell modules are connected with the bottom plate, and the upper ends of the battery cell modules are connected with the top plate; the fixing device comprises a screw and fixing nuts, the screw penetrates through the first connecting hole, the first connecting column, the second connecting column and the second connecting hole, and the fixing nuts are arranged at two ends of the screw. The battery cell module and the battery module structure can be freely combined and spliced to avoid welding. However, the welding-free structure cannot control the contact reliability and conductivity of the positive plate and the negative plate with the battery cell well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a exempt from to weld support, battery module and group battery for battery module, the equipment with disassemble simple high-efficient, electric conductivity is good, the reliability is high.

The utility model discloses a exempt from technical scheme that welding support for battery module adopted is:

a bracket for a weld-free battery module, comprising: the battery electrode support comprises a support main body, a plurality of accommodating holes and a plurality of clamping pieces, wherein the support main body is used for being arranged at two ends of a battery, the accommodating holes are used for accommodating one end of the battery, the periphery of each accommodating hole radially protrudes inwards to form a stop block used for limiting the axial position of the battery, and a leakage area used for leaking a battery electrode is reserved between the stop block and the periphery of each accommodating hole; a first fastening member for detachably coupling the holder main bodies at both ends of the battery, thereby restraining the battery between the stoppers of the holder main bodies; and the conducting plate is arranged on one side of the bracket main body, which is far away from the battery, the conducting plate is provided with a plurality of conducting elastic sheets, one end of each conducting elastic sheet is connected with the conducting plate, and the other end of each conducting elastic sheet arches towards the leakage area to form an elastic arched part which is abutted against the electrode of the battery.

Preferably, the bracket further comprises a cover plate, the cover plate is arranged on one side, away from the bracket main body, of the conducting strip, and the cover plate is used for pressing the conducting strip on the bracket main body.

Preferably, the support further comprises a current collection screw and a current collection nut, the current collection screw and the current collection nut are electrically connected with the conducting strip so as to be output outwards, the current collection nut is arranged on one side, close to the support main body, of the conducting strip, and one end of the current collection screw penetrates through the cover plate and the conducting strip and then is screwed into the current collection nut.

Preferably, the first fastener comprises a bolt and a bolt sleeve; a first locking hole is formed in the support main body, and one end of the bolt penetrates through the first locking holes in the support main bodies at the two ends of the battery and is screwed with the bolt sleeve.

Preferably, the bolt sleeve and the bracket main body are integrally formed by injection molding.

Preferably, the bracket further comprises a second fastening piece, and the bracket main body is provided with a second locking hole corresponding to the second fastening piece.

Preferably, the side wall of the bracket body is provided with a clamping groove or a clamping block.

As the preferred scheme, the conducting strip is made of phosphor copper, the conducting strip and the conducting elastic sheet are integrally formed by stamping, and the bracket main body is made of flame-retardant plastic materials.

A welding-free battery module comprises a support and a plurality of batteries arranged in the support.

The utility model provides an exempt from to weld group battery, is including exempting from to weld battery module, wherein, in the horizontal direction, adjacent exempt from to weld battery module and be connected through draw-in groove and fixture block cooperation joint, in vertical direction, adjacent exempt from to weld battery module and pass through the locking of second fastener detachable.

The utility model discloses a exempt from to weld bracket, battery module and group battery for battery module's beneficial effect is: the bracket main body is arranged at two ends of the battery, so that the two ends of the battery are respectively aligned with the containing holes on the bracket main body. And the bracket main bodies at the two ends of the battery are in locking connection through the first fastening piece. The conducting strip is arranged on one side of the bracket main body, so that the conducting elastic sheet is electrically connected with one electrode of the battery. The assembling and disassembling are simple and efficient, high in safety and convenient to produce and recycle. The elastic arching part of the conductive elastic sheet extends into the leakage area and abuts against the battery electrode, the contact area of the elastic arching part and the battery electrode is large, the conductivity is good, meanwhile, due to the thickness of the stop block, a certain clearance height is formed between the battery electrode and the conductive sheet, the phenomenon that the elastic sheet excessively deforms to lose elasticity or crush the battery is avoided, and the connection reliability of the elastic sheet and the battery is good.

Drawings

Fig. 1 is a schematic structural view of the welding-free battery module bracket of the present invention.

Fig. 2 is a schematic structural diagram of the welding-free battery pack of the present invention.

Detailed Description

The invention will be further elucidated and described with reference to the following embodiments and drawings in which:

referring to fig. 1, a bracket for a welding-free battery module includes a bracket main body 10, a first fastening member 20, and a conductive sheet 30.

The holder main body 10 is provided at both ends of the battery 50. The holder body 10 is provided with a plurality of accommodating holes 11 for accommodating one ends of the batteries 50, the circumference of the accommodating holes 11 protrudes radially inward to form a stopper 12 for limiting the axial position of the batteries 50, and a leakage area 13 for leaking the electrodes of the batteries 50 is left between the stopper 12 and the circumference of the accommodating holes 11.

The first fastener 20 is used to detachably couple the holder main body 10 at both ends of the battery 50, thereby trapping the battery 50 between the stoppers 12 of the holder main body 10. The first fastener 20 includes a bolt 21 and a bolt sleeve 22. Specifically, the bracket main body 10 is provided with a first locking hole 14, and one end of the bolt 21 passes through the first locking hole 14 on the bracket main body 10 at two ends of the battery 50 and is screwed with the bolt sleeve 22. The first locking hole 14 of the bolt sleeve 22 is preferably a counter-sunk hole.

The conductive sheet 30 is provided on the side of the holder main body 10 away from the battery 50. The conductive sheet 30 has a plurality of conductive elastic pieces 31, one end of each conductive elastic piece 31 is connected with the conductive sheet 30, the other end of each conductive elastic piece 31 is suspended, and the other suspended end of each conductive elastic piece 31 is arched towards the leakage area 13 to form an elastic arched part 311 abutted against the electrode of the battery 50. Preferably, the conductive sheet 30 and the conductive elastic sheet 31 are integrally formed by stamping.

The welding-free battery 50 module bracket further comprises a cover plate 40, the cover plate 40 is arranged on one side of the conducting plate 30, which is far away from the bracket main body 10, and the cover plate 40 is used for pressing the conducting plate 30 on the bracket main body 10. Specifically, the bolt 21 of the first fastener 20 sequentially passes through the cover plate 40, the conductive sheet 30, the bracket main body 10 at one end of the battery 50, and the bracket main body 10 at the other end of the battery 50, and then extends into the bolt sleeve 22 of the first fastener 20 to complete locking. The conducting plate 30 is provided with an avoiding hole 32 for the first fastening member 20 to pass through, and the size of the avoiding hole 32 is larger than that of the first fastening member 20 so as to avoid electrical connection between the two.

The welding-free battery module support further comprises a current collection screw 61 and a current collection nut 62, the current collection screw 61 and the current collection nut 62 are electrically connected with the conducting strip 30 so as to be output outwards, the current collection nut 62 is arranged on one side, close to the support main body 10, of the conducting strip 30, and one end of the current collection screw 61 penetrates through the cover plate 40 and the conducting strip 30 and then is screwed into the current collection nut 62.

The welding-free battery module bracket further comprises a second fastening piece 70, and the bracket main body 10 is provided with a second locking hole 15 corresponding to the second fastening piece 70. When a plurality of supports are spliced in the vertical direction, the support main body 10 of one support and the support main body 10 of the other adjacent support are arranged back to back, and the first fastening piece 20 penetrates through the second locking holes 15 on the two support main bodies 10 arranged back to back and is locked, so that the vertical splicing is completed. Specifically, the second fastening member 70 is a screw, and the second locking hole 15 is a threaded hole.

The side wall of the bracket body 10 is provided with a clamping groove 16 or a clamping block 17. The locking groove 16 is preferably a wedge-shaped groove, and the locking block 17 is preferably a wedge-shaped block. When a plurality of brackets are spliced in the horizontal direction, the clamping groove 16 or the clamping block 17 of the bracket main body 10 of one bracket is clamped with the clamping block 17 or the clamping groove 16 of the bracket main body 10 of the other adjacent bracket, so that the horizontal splicing is completed.

In the above embodiment, the conductive sheet 30 is made of phosphor copper. The bracket main body 10 is made of flame-retardant plastic material, and the bracket main body 10 is preferably made of ABS + PC fireproof material.

In the above solution, if a large batch of products are produced, the bolt sleeve 22 and the bracket main body 10 are integrally injection-molded, so as to further simplify the assembly process of the battery 50 module.

In the above solution, a plurality of positioning protrusions 18 are formed on one surface of the bracket main body 10 close to the conductive sheet 30 in a protruding manner, a plurality of positioning holes 33 opposite to the positioning protrusions 18 are formed on the conductive sheet 30, and the positioning protrusions 18 and the positioning holes 33 are matched to realize the positioning of the conductive sheet 30 and the bracket main body 10.

The utility model discloses still disclose a exempt from to weld battery module, including exempting from to weld the support that battery module used and locating a plurality of batteries 50 in the support.

Referring to fig. 2, the present invention also discloses a welding-free battery pack, which includes a plurality of welding-free battery modules. Wherein, on the horizontal direction, adjacent exempt from to weld battery module passes through draw-in groove 16 and fixture block 17 cooperation joint to be connected, and in vertical direction, adjacent exempt from to weld battery module passes through the locking of second fastener 70 detachable. It is noted that the cap plate 40 is disposed at the top of the first welding-free battery module and the bottom of the last welding-free battery module in the vertical direction.

The utility model discloses a exempt from to weld support, battery module and group battery for battery module sets up support main part 10 at 50 both ends of battery, makes battery 50's both ends aim at the holding hole 11 on the support main part 10 respectively. The bracket body 10 at both ends of the battery 50 is lockingly coupled by the first fastener 20. The conductive sheet 30 is disposed on one side of the stand body 10 so that the conductive elastic sheet 31 is electrically connected to one side of the battery 50. The assembling and disassembling are simple and efficient, high in safety and convenient to produce and recycle. The elastic arch part of the conductive elastic sheet 31 extends into the leakage area 13 and abuts against the electrode of the battery 50, the contact area of the elastic arch part and the electrode of the battery 50 is large, the conductivity is good, meanwhile, due to the thickness of the stop block 12, a certain clearance height is formed between the electrode of the battery 50 and the conductive sheet 30, the phenomenon that the elastic sheet excessively deforms to lose elasticity or crush the battery 50 is avoided, and the connection reliability of the elastic arch part and the conductive sheet is good.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A welding-free bracket for a battery module, comprising:

the battery electrode support comprises a support main body, a plurality of accommodating holes and a plurality of clamping pieces, wherein the support main body is used for being arranged at two ends of a battery, the accommodating holes are used for accommodating one end of the battery, the periphery of each accommodating hole radially protrudes inwards to form a stop block used for limiting the axial position of the battery, and a leakage area used for leaking a battery electrode is reserved between the stop block and the periphery of each accommodating hole;

a first fastening member for detachably coupling the holder main bodies at both ends of the battery, thereby restraining the battery between the stoppers of the holder main bodies; and

the conducting strip is arranged on one side, far away from the battery, of the support main body, the conducting strip is provided with a plurality of conducting elastic sheets, one end of each conducting elastic sheet is connected with the conducting strip, and the other end of each conducting elastic sheet is arched towards the leakage area to form an elastic arched part which is abutted against the battery electrode.

2. The bracket for a weld-free battery module of claim 1, further comprising a cover plate disposed on a side of the conductive sheet away from the bracket body, the cover plate being configured to press the conductive sheet against the bracket body.

3. The welding-free battery module support of claim 2, further comprising a current collection screw and a current collection nut, wherein the current collection screw and the current collection nut are electrically connected with the conductive sheet so as to be output externally, the current collection nut is disposed on one side of the conductive sheet close to the support body, and one end of the current collection screw passes through the cover plate and the conductive sheet and then is screwed into the current collection nut.

4. The weld-free battery module bracket of claim 1, wherein the first fastener comprises a bolt and a bolt sleeve;

a first locking hole is formed in the support main body, and one end of the bolt penetrates through the first locking holes in the support main bodies at the two ends of the battery and is screwed with the bolt sleeve.

5. The weld-free battery module bracket of claim 4, wherein the bolt sleeves are integrally injection molded with the bracket body.

6. The welding-free battery module support of claim 1, further comprising a second fastener, wherein the support body defines a second locking hole corresponding to the second fastener.

7. The welding-free battery module bracket of claim 1, wherein the bracket body side wall is provided with a slot or a block.

8. The welding-free battery module support of any one of claims 1-6, wherein the conductive sheet is made of phosphor copper, the conductive sheet and the conductive elastic sheet are integrally formed by stamping, and the support body is made of flame-retardant plastic material.

9. A weld-free battery module comprising a support according to any one of claims 1 to 8 and a plurality of batteries disposed within the support.

10. A welding-free battery pack is characterized by comprising a plurality of welding-free battery modules according to claim 9, wherein the adjacent welding-free battery modules are connected with clamping blocks in a matched clamping mode through clamping grooves in the horizontal direction, and the adjacent welding-free battery modules are detachably locked through second fasteners in the vertical direction.