CN211455756U

CN211455756U - Lithium battery module

Info

Publication number: CN211455756U
Application number: CN201922439191.2U
Authority: CN
Inventors: 焦红江; 何龙海; 黄金锋; 王新辉; 刘起权
Original assignee: Huizhou Weijiang Industrial Co ltd
Current assignee: Huizhou Weijiang Industrial Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-08
Anticipated expiration: 2029-12-30

Abstract

A lithium battery module comprises a lithium battery pack, two detachable card supports and a plurality of conductive patches. The two detachable clamping supports are respectively arranged on the anode and the cathode of the lithium battery pack, and each detachable clamping support comprises a plurality of splicing monomers; the splicing single body comprises a splicing seat and a plurality of butt-jointed buckles, the splicing seat is provided with an accommodating cavity and a welding through hole, the welding through hole is communicated with the accommodating cavity, the butt-jointed buckles are all arranged on the outer wall of the splicing seat, and each butt-jointed buckle comprises a male buckle and a female buckle; the conductive patches are attached to each other. The detachable card support is formed by butting a plurality of spliced monomers, the number of the spliced monomers can be increased or reduced according to the number of the battery monomers in the actually produced battery module, the card support does not need to be redesigned, and the design cost is saved; the splicing monomers are buckled with each other through butt buckles, so that the assembly and disassembly are convenient; realize the electricity through electrically conductive paster between a plurality of concatenation monomers and connect, reduce the welding part, improve battery module packaging efficiency.

Description

Lithium battery module

Technical Field

The utility model relates to a battery especially relates to a lithium battery module.

Background

The battery module can be understood as an intermediate product of a battery core and a pack formed by combining the lithium ion battery cores in a series-parallel connection mode and additionally installing the single battery monitoring and managing device. The lithium battery monomers are combined in series and parallel connection to enable the output power of the battery module to reach the rated value of an electric appliance, wherein the output voltage of a battery pack obtained by combining the lithium battery monomers is unchanged when the lithium battery monomers are connected in parallel, and the capacity and the output current are improved; furthermore, the current of the battery module formed by connecting the battery packs in series is unchanged, and the voltage is increased, so that the output current and the output voltage of the battery module meet the use requirements of the electric appliances. In order to meet the use requirements of electrical appliances, the same battery module has a series and parallel connection relationship.

In order to obtain the target output capacitance and output current, each battery cell needs to be connected in parallel to form a plurality of battery packs, and in order to enable the output voltage of the battery module to reach the rated voltage of the electric appliance, each battery pack needs to be connected in series.

Wherein battery module includes a plurality of battery monomer, is used for the free card of fixed battery to hold in the palm and is used for the conducting strip that connects each battery monomer electricity, when the equipment battery module, need earlier put into the card with each battery monomer sign indicating number in holding in the palm, place conducting strip on the free anodal of battery/negative pole and carry out spot welding afterwards, advance each battery monomer electricity from this and connect.

However, in the spot welding process, because objective reason, can appear welding phenomenon such as wrong, rosin joint, need pull down the conducting strip from the battery monomer, the battery monomer is extremely fragile at this in-process, and consuming time is long, in addition, the quantity of the battery that current card holds in the palm can hold is fixed, need make the battery module of different power promptly and need design the battery card that corresponds and hold in the palm and fix, need redesign mould to mould plastics, design cost is high, and is not flexible enough.

Therefore, how to optimize the structure of the existing battery module, the design cost is reduced, the assembly of the battery module is more flexible, and the assembly and disassembly of the battery module are simpler and more convenient, which is a problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a card and holding in the palm and can make up according to the demand is nimble to the lithium cell module that each battery monomer can be dismantled fast.

The purpose of the utility model is realized through the following technical scheme:

a lithium battery module includes: the battery pack comprises a lithium battery pack, two detachable card holders and a plurality of conductive patches;

the two detachable clamping supports are respectively arranged on the anode and the cathode of the lithium battery pack, and each detachable clamping support comprises a plurality of splicing monomers;

in one of the splicing single bodies, each splicing single body comprises a splicing seat and a plurality of butt buckles, each splicing seat is provided with an accommodating cavity and a welding through hole, each welding through hole is communicated with the corresponding accommodating cavity, the butt buckles are arranged on the outer wall of the splicing seat, the butt buckles are distributed in a circumferential array by taking the axial lead of the welding through hole as the center, and each butt buckle comprises a male buckle and a female buckle;

a plurality of electrically conductive paster one-to-one sets up in a plurality of in the concatenation seat, and it is a plurality of electrically conductive paster laminates each other.

In one embodiment, the splicing seat is provided with a pre-buried groove, the pre-buried groove is located on the inner wall of the accommodating cavity and communicated with the welding through hole, and the conductive patch is embedded in the pre-buried groove.

In one embodiment, the conductive patch comprises a middle guide part and linking parts located at two ends of the middle guide part, the middle guide part is located in the embedded groove, and the linking parts are located on the outer wall of the splicing seat.

In one embodiment, the linking part is located between the male buckle and the female buckle.

In one embodiment, the link portion is provided with a bending region.

In one embodiment, the pre-buried slot includes a first mounting area and a second mounting area, and the first mounting area and the second mounting area are respectively used for accommodating one conductive patch.

In one embodiment, the depth of the first mounting region is greater than the depth of the second mounting region.

In one embodiment, the splicing seat further includes a plurality of elastic abutting strips, and the plurality of elastic abutting strips are arranged in the accommodating cavity at intervals.

In one embodiment, the elastic holding strips are distributed in a circumferential array by taking the axis of the welding through hole as the center.

In one embodiment, the number of the elastic holding strips is 4.

Compared with the prior art, the utility model discloses at least, following advantage has:

1. the detachable card support is formed by butting a plurality of spliced monomers, the number of the spliced monomers can be increased or reduced according to the number of the battery monomers in the actually produced battery module, the card support does not need to be redesigned, and the design cost is saved;

2. the splicing monomers are buckled with each other through butt buckles, so that the assembly and disassembly are convenient;

3. realize the electricity through electrically conductive paster between a plurality of concatenation monomers and connect, reduce the welding part, improve battery module packaging efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a lithium battery module according to an embodiment of the present invention;

FIG. 2 is an assembled view of the lithium battery module shown in FIG. 1;

fig. 3 is a schematic view illustrating the matching of the lithium battery cells and the splicing cells according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the splicing unit in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a conductive patch according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a lithium battery module 10 includes: the detachable card support comprises a lithium battery pack 100, two detachable card supports 200 and a plurality of conductive patches 300, wherein the two detachable card supports 200 are respectively arranged on the anode and the cathode of the lithium battery pack 100, the detachable card supports 200 can be detached into a plurality of splicing monomers 20, the number of the splicing monomers 20 can be adjusted according to the number of the single batteries on the lithium battery pack 100, card support patterns do not need to be redesigned, the design cost is saved, and the maintenance difficulty is reduced due to the fact that the detachable card supports can be detached.

The lithium battery pack 100 includes a plurality of battery cells 110.

The two detachable card holders 200 are respectively installed on the positive electrode and the negative electrode of the lithium battery pack 100, and each detachable card holder 200 includes a plurality of splicing monomers 20; in one of the splicing monomers 20, the splicing monomer 20 includes a splicing seat 210 and a plurality of butt buckles 220, the splicing seat 210 has been provided with an accommodating cavity 211 and a welding through hole 212, the welding through hole 212 communicates with the accommodating cavity 211, the butt buckles 220 are all disposed on the outer wall of the splicing seat 210, the butt buckles 220 are circumferentially distributed around the axis of the welding through hole 212, each butt buckle 220 includes a male buckle 221 and a female buckle 222, when two adjacent splicing monomers 20 are spliced, the male buckle 221 on the outer wall of the splicing seat 210 is used for being buckled with the female buckle 222 on the adjacent splicing seat 210, and the female buckle 222 on the outer wall of the splicing seat 210 is used for accommodating the male buckle 221 on the adjacent splicing seat 210.

Each splicing seat 210 is correspondingly covered on the positive electrode/negative electrode of one lithium battery cell 110, so that the positive electrode/negative electrode of the lithium battery cell 110 is positioned in the accommodating cavity 211 and is arranged towards the welding through hole 212, a lithium battery cell 110 is arranged on the positive electrode and the negative electrode of the same lithium battery cell 110, and the lithium battery cells 110 are fixed together by splicing the lithium battery cells 110 with the lithium battery cells 110.

The conductive patches 300 are disposed in the splicing seats 210 in a one-to-one correspondence, and the conductive patches 300 are attached to each other. The positive pole/negative pole of lithium cell 110 gets into and accepts the chamber 211 interior back and the laminating of electrically conductive paster 300, and after adjacent splice seat 210 combination together, install two electrically conductive pasters 300 on two adjacent splice seats 210 and laminate each other, and then make two adjacent lithium cell 110 connect through electrically conductive paster 300 electricity, but just be about to pack into the electricity that has accomplished with other battery cell 110 behind the detachable card support 200 of battery cell 110, the required work step of equipment lithium cell module 10 has been reduced, the production efficiency of lithium cell module 10 has been improved.

The following describes the assembly steps of the lithium battery module 10:

before assembly, information such as output power, output current, output voltage and the like of the lithium battery module 10 needs to be confirmed to confirm the specification of the lithium battery cells 110, and determine how many lithium battery cells 110 need to be connected in parallel to form a lithium battery module, and how many lithium battery modules need to be connected in series;

first, a plurality of conductive patches 300 are loaded one by one into a plurality of splicing seats 210;

then, splicing the plurality of splicing seats 210, aligning the sub-buckles 221 on the outer walls of the splicing seats 210 with the female buckles 222 on the adjacent splicing seats 210, enabling the female buckles 222 on the outer walls of the splicing seats 210 to face the sub-buckles 221 on the adjacent splicing seats 210, applying force along the extending direction of the sub-buckles 221, enabling the two splicing seats 210 to be mutually buckled, repeating the operations to splice the splicing seats 210 together in sequence, connecting the conductive patches 300 on the splicing seats 210 which are spliced together at the moment, and completing the assembly of the detachable clamping holder 200;

after the two detachable card holders 200 are assembled, the plurality of battery monomers 110 are stacked into the accommodating cavities 211 of the plurality of splicing seats 210 one by one, the other detachable card holder 200 is covered on the battery pack 100, at this time, the positive electrodes and the negative electrodes of the battery monomers 110 are connected together through a circuit formed by the conductive patches 300, namely, the internal circuit of the lithium battery module is connected;

then, detecting the assembled lithium battery module 10;

after the detection is completed, the conductive patch 300 is welded to the positive electrode/negative electrode of the battery cell 110 through the welding through hole 212, and the lithium battery module 10 is fixed.

When the damage or the reverse attachment of the battery cell 110 is detected during the detection process, the splicing seat 210 covered on the battery cell 110 may be drawn out by using a tool such as tweezers, and the normal battery cell 110 may be replaced, and then the splicing seat 210 may be inserted into the detachable tray 200 again through the butt-joint buckle 220 and welded.

In the subsequent maintenance, the splicing seat 210 on the battery cell 110 with the problem can be independently applied with force, and then the splicing seat 210 is separated from the battery cell 110, the battery cell 110 and the conductive patch 300 which are welded together are taken out together, and the splicing seat 210 is reassembled into the detachable card holder 200 after replacement.

In an embodiment, in order to facilitate the installation of the conductive patch 300, the splicing seat 210 is provided with a pre-buried groove 213, the pre-buried groove 213 is located on the inner wall of the accommodating cavity 211, the pre-buried groove 213 is communicated with the welding through hole 212, and the conductive patch 300 is embedded in the pre-buried groove 213.

In one embodiment, the conductive patch 300 includes a middle guide portion 310 and a linking portion 320 at two ends of the middle guide portion, the middle guide portion 310 is located in the pre-buried slot 213, and the linking portion 320 is located on an outer wall of the splicing seat 210. The linking part 320 is located between the male button 221 and the female button 222.

In order to improve the connection tightness between two adjacent conductive patches 300 in the detachable card holder 200 and avoid the phenomenon of poor contact, the link portion 320 is provided with a bending region 321.

It should be noted that, according to the serial/parallel connection requirement of each battery cell 10 in the lithium battery module 10, the number of the conductive patches 300 can be increased, in an embodiment, the pre-buried groove 213 includes a first installation area 213a and a second installation area 213b, the first installation area 213a and the second installation area 213b are respectively used for accommodating one conductive patch 300, and the depth of the first installation area 213a is greater than the depth of the second installation area 213 b.

In order to improve the structural stability of the lithium battery module 10, the splicing seat 210 further includes a plurality of elastic supporting strips 214, and the elastic supporting strips 214 are disposed in the accommodating cavity 211 at intervals. The plurality of elastic holding strips 214 are distributed in a circumferential array around the axis of the welding through hole 212. In one embodiment, there are 4 elastic bars 214.

1. the detachable card holder 200 is formed by butting a plurality of splicing monomers 20, the number of the splicing monomers 20 can be increased or reduced according to the number of the battery monomers in the actually produced battery module, the card holder does not need to be redesigned, and the design cost is saved;

2. the splicing single bodies 20 are buckled with each other through butt buckles 220, so that the assembly and disassembly are convenient;

3. realize the electricity through electrically conductive paster 300 between a plurality of concatenation monomers 20 and connect, reduce the welding part, improve battery module packaging efficiency.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A lithium battery module, comprising:

a lithium battery pack is provided,

the two detachable card holders are respectively installed on the anode and the cathode of the lithium battery pack and each detachable card holder comprises a plurality of splicing monomers;

a plurality of electrically conductive paster, it is a plurality of electrically conductive paster one-to-one sets up in a plurality of in the concatenation seat, and it is a plurality of electrically conductive paster laminates each other.

2. The lithium battery module as recited in claim 1, wherein the splicing seat is provided with a pre-buried groove, the pre-buried groove is located on the inner wall of the accommodating cavity and is communicated with the welding through hole, and the conductive patch is embedded in the pre-buried groove.

3. The lithium battery module as claimed in claim 2, wherein the conductive patch comprises a middle guide part and linking parts at two ends of the middle guide part, the middle guide part is located in the pre-buried groove, and the linking parts are located on the outer wall of the splicing seat.

4. The lithium battery module as claimed in claim 3, wherein the linking part is located between the male button and the female button.

5. The lithium battery module as claimed in claim 3, characterized in that the linking part is provided with a bending region.

6. The lithium battery module as claimed in claim 2, wherein the pre-buried slot comprises a first mounting area and a second mounting area, and the first mounting area and the second mounting area are respectively used for accommodating one conductive patch.

7. The lithium battery module as claimed in claim 6, wherein the depth of the first mounting region is greater than the depth of the second mounting region.

8. The lithium battery module as claimed in claim 1, wherein the splicing seat further comprises a plurality of elastic abutting strips, and the elastic abutting strips are arranged in the accommodating cavity at intervals.

9. The lithium battery module as claimed in claim 8, wherein the plurality of elastic holding strips are distributed in a circumferential array around the axis of the welding through hole.

10. The lithium battery module as claimed in claim 8, wherein the number of the elastic holding strips is 4.