CN210489719U - Battery module leading-out structure, battery module and battery pack - Google Patents
Battery module leading-out structure, battery module and battery pack Download PDFInfo
- Publication number
- CN210489719U CN210489719U CN201920983054.2U CN201920983054U CN210489719U CN 210489719 U CN210489719 U CN 210489719U CN 201920983054 U CN201920983054 U CN 201920983054U CN 210489719 U CN210489719 U CN 210489719U
- Authority
- CN
- China
- Prior art keywords
- module
- leading
- groove
- limiting
- lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a battery module leading-out structure, which comprises a bridging piece, an insulation limiting piece and a module confluence leading-out piece led out by a module body; the insulating limiting part is connected to the module body and used for limiting the module confluence leading-out part, and the module confluence leading-out part is electrically connected with the bridging part. The utility model discloses can effectively improve battery module connection stability and reduce connecting resistance, consequently can effectively improve battery system charge-discharge, especially quick charge-discharge in-process midspan union piece problem of excessively generating heat.
Description
Technical Field
The utility model relates to a battery technology field, concretely relates to battery module draw forth structure and contain battery module and battery package of this battery module draw forth structure.
Background
The high energy density and fast charging function gradually become one of the important performance indexes of the electric vehicle, and the high energy and fast charging inevitably causes the connecting pieces interconnected in the battery module of the direct energy supply unit of the electric vehicle to bear larger load. This will require the battery module to be connected more tightly and the connection performance more stable, so as to improve the stability of the power transmission of the battery module; the connecting resistance of the battery module connecting piece is lower so as to reduce the self-consumption of power transmission and improve the effective output of electric energy.
The battery modules are connected in series or in parallel to form a battery system, and the battery system is used for providing power for the electric automobile. As shown in fig. 1, the battery modules 1 are generally connected in series or in parallel through the crossover 2. The bridging piece 2 is connected with the confluence leading-out piece 12 of the battery module 1 in a bolt connection mode, and the bolt connection mode has the risks of high connection resistance and serious heating; the bolt connection stability is insufficient, the connection internal resistance is obviously increased along with the prolonging of the service cycle of the vehicle, and even the potential safety hazards such as sparking and the like caused by poor contact exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem to a battery module extraction structure is provided.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a battery module leading-out structure comprises a bridging piece, an insulation limiting piece and a module confluence leading-out piece led out from a module body; the insulating limiting part is connected to the module body and used for limiting the module confluence leading-out part, and the module confluence leading-out part is electrically connected with the bridging part.
The utility model discloses a preferred embodiment is equipped with the spacing groove on the insulating locating part, the module converges and is equipped with the stopper on the extraction piece, the stopper is connected with the spacing groove cooperation.
The utility model discloses a preferred embodiment, the module draws forth that converges includes two tip and the middle part between two tips, be equipped with the stopper on the middle part, the stopper is held the spacing inslot.
In a preferred embodiment of the present invention, the module converging and leading-out member is a plate-shaped structure, and a first protrusion structure is disposed on a surface of the module converging and leading-out member along a width direction thereof, and the first protrusion structure is a stopper; the insulating limiting part is provided with a first groove structure, a part of the module confluence leading-out part is accommodated in the first groove structure, and the first groove structure is provided with a limiting groove matched with the first protruding structure.
In a preferred embodiment of the present invention, the thickness of the limiting block is smaller than the depth of the limiting groove.
In a preferred embodiment of the present invention, one end of the bridging member is superposed on a surface of the module busbar lead-out member facing away from the insulation limit member, and one end of the module busbar lead-out member is electrically connected to the bridging member.
In a preferred embodiment of the present invention, the module confluence leading-out member is provided with a first connecting structure on a surface thereof, and the bridging member is provided with a second connecting structure on a surface thereof, wherein the first connecting structure and the second connecting structure are connected in a matching manner.
In a preferred embodiment of the present invention, the first connecting structure is a second protrusion structure, and the second connecting structure is a second groove structure; the depth of the second groove structure is 0.5-1.5 times of the height of the second protrusion structure, and the width of the second groove structure is 0.5-1.5 times of the width of the second protrusion structure.
In a preferred embodiment of the present invention, the second connecting structure is a second protrusion structure, and the first connecting structure is a second groove structure; the depth of the second groove structure is 0.5-1.5 times of the height of the second protrusion structure, and the width of the second groove structure is 0.5-1.5 times of the width of the second protrusion structure.
In a preferred embodiment of the present invention, the shape of the second protrusion structure may be one or more of a circle, an ellipse, a parallelogram, and an N-sided polygon, where N is an integer greater than 2; the shape of the second groove structure can be one or more of a circle, a parallelogram and an N-edge, wherein N is an integer greater than 2; the shape and the number of the second protruding structures are matched with those of the second groove structures.
In a preferred embodiment of the invention, the bridging piece is covered with a stretchable heat shrinkable insulating layer.
In a preferred embodiment of the invention, the module busbar lead-out is welded or riveted to the crossover.
The utility model provides a battery module, battery module include module body and above-mentioned battery module extraction structure.
The utility model provides a battery pack, include battery pack busbar and as above a plurality of battery module, it is a plurality of the battery module passes through the cross-over piece with battery pack busbar electricity is connected.
The utility model has the advantages that:
the utility model discloses can effectively improve battery module connection stability and reduce connecting resistance, consequently can effectively improve battery package system charge-discharge, especially quick charge-discharge in-process midspan union piece excessive heating problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view illustrating an application of a conventional battery module lead-out structure;
fig. 2 is a schematic structural diagram of a battery module lead-out structure provided in the present application;
fig. 3 is a schematic view showing a connection structure of a module confluence lead-out member and a crossover in embodiment 1 of the present application;
FIG. 4 is a schematic view of a connection structure of a bus bar lead-out member and a bridging member of the module according to embodiment 2 of the present application;
fig. 5 is a schematic view showing a connection structure of a module confluence lead-out member and a crossover in embodiment 3 of the present application;
fig. 6 is a schematic view of a connection structure of a module busbar lead-out member and a bridging member according to embodiment 4 of the present application.
Reference numerals:
the module busbar lead-out member 210, the limiting block 211, the bridging member 220, the insulating limiting member 230, the limiting groove 231, the first welding end 310, the second welding end 320, the heat-shrinkable insulating layer 400, the second protrusion structure 510, and the second groove structure 520.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Example 1
Referring to fig. 2 and 3, the battery module lead-out structure provided by the present invention includes a module bus lead-out member 210, a bridging member 220, and an insulation limit member 230.
The insulation limiting part 230 is connected to the module body and used for limiting the module confluence leading-out part 210, and is fixed on the module body through the insulation limiting part 230, so that potential safety hazards caused by short circuit or heat generation due to displacement of the limiting module confluence leading-out part 210 are solved, and on the other hand, the insulation limiting part 230 has insulation performance, so that the safety performance is further improved; the module busbar lead-out member 210 led out from the module body is electrically connected to the crossover member 220, and preferably, the module busbar lead-out member 210 and the crossover member 220 are directly fixed.
The terms "plurality", "at least one" as used herein mean 2 to 100.
The module bus lead-out member of the present disclosure refers to a lead-out structure for summarizing the total positive electrode and the total negative electrode of each battery module current.
Preferably, the insulating limiting member 230 is provided with a limiting groove 231, the module convergence leading-out member 210 is provided with a limiting block 211, the limiting block 211 is connected with the limiting groove 230 in a matching manner, and the positioning of the module convergence leading-out member 210 can be realized through the limiting block 211 and the limiting groove 230, so that the connection stability and the connection safety of the subsequent battery module leading-out structure are facilitated.
Preferably, the module bus bar lead-out member 210 includes two end portions and a middle portion between the two end portions, the above-mentioned stopper 211 is provided on the middle portion, and the stopper 211 is received in the stopper groove 231. Specifically, the module converging and leading-out member 210 is a plate-shaped structure, and a first protruding structure is arranged on the surface of the module converging and leading-out member 210 in the width direction, and the first protruding structure is a limiting block 211; the insulating position-limiting member 230 is provided with a first groove structure, a part of the module confluence leading-out member 210 is accommodated in the first groove structure, and the first groove structure is provided with a position-limiting groove 231 matched with the first protrusion structure.
Preferably, the thickness of the limiting block 211 is smaller than the depth of the limiting groove 231, so as to provide enough process margin for the limiting groove 231, so that the module confluence lead-out piece is convenient to mount and prevent dislocation, and the module confluence lead-out piece 210 is prevented from being mounted in place.
One end of the crossover 220 is overlapped on a surface of the module busbar lead-out 210 facing away from the insulation stopper 230, and one end of the module busbar lead-out 210 is electrically connected to the crossover 220. Preferably, the module bus bar lead-out member 210 is welded or riveted with the crossover member 220. Specifically, the module bus bar outgoing member 210 is provided with a first welding terminal 310, the two ends of the bridging member 220 are respectively provided with a second welding terminal 320, and the first welding terminal 310 can be welded and fixed with any one of the second welding terminals 320.
The first welding end 310 and the second welding end 320 are both horizontal, the first welding end 310 and the second welding end 320 can be pressed and fixed under the pressure action of a pressure head of welding equipment or a rivet joint of connecting equipment, and then welding connection can be directly carried out. Preferably, the bridging member 220 is covered with a stretchable heat-shrinkable insulating layer 400, and after the first welding end 310 and the second welding end 320 are welded and fixed, the heat-shrinkable insulating layer 400 can be stretched and the first welding end 310 and the second welding end 320 can be covered, so that the insulation protection of the connection between the module busbar lead-out member 210 and the bridging member 220 can be realized.
When the second welding end 320 of the other end of the bridging member 220 is connected to the first welding end 310 of the other module bus bar lead-out member 210, the bending deformation part 221 of the bridging member 220 is ensured to be in a non-tight state, so that a relative movement buffer space between the modules can be reserved.
In addition, in order to satisfy the requirements of the connection strength and the overcurrent ratio between the module busbar lead 210 and the crossover 220, the welding area of the first welding end 310 of the module busbar lead 210 beyond the boundary portion of the insulation stopper 230 of the battery module may be varied, and the variation may be achieved by varying the welding number or the welding sectional area.
Furthermore, the fixing method is not limited to ultrasonic metal welding, and other fixing methods such as SPR self-piercing riveting can be adopted, and only the module bus leading-out member 210 and the bridging member 220 need to be fixed.
The module confluence leading-out member 210 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like; the bridging piece 220 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like.
The application provides a battery module, including module body and above-mentioned battery module extraction structure, preferably, insulating locating part 230 and the bottom plate or the roof mechanical interlocking and the screw connection of module body, the electric core utmost point ear intercommunication interconnection of insulating locating part 230 and module body simultaneously.
The application provides a battery pack, including battery pack busbar and a plurality of battery module as above, it is a plurality of battery module passes through the crossover piece electricity is connected. Example 2
Referring to fig. 2 and 4, the battery module lead-out structure provided by the present invention includes a module bus lead-out member 210, a bridging member 220, and an insulation limit member 230.
The insulation limiting part 230 is connected to the module body and used for limiting the module confluence leading-out part 210, and is fixed on the module body through the insulation limiting part 230, so that potential safety hazards caused by short circuit or heat generation due to displacement of the limiting module confluence leading-out part 210 are solved, and on the other hand, the insulation limiting part 230 has insulation performance, so that the safety performance is further improved; the module busbar lead-out member 210 led out from the module body is electrically connected to the crossover member 220, and preferably, the module busbar lead-out member 210 and the crossover member 220 are directly fixed.
The terms "plurality", "at least one" as used herein mean 2 to 100.
The module bus bar lead-out member 210 according to the present disclosure refers to a lead-out structure for summarizing the total positive electrode and the total negative electrode of each battery module current.
Preferably, the insulating limiting member 230 is provided with a limiting groove 231, the module convergence leading-out member 210 is provided with a limiting block 211, the limiting block 211 is connected with the limiting groove 230 in a matching manner, and the positioning of the module convergence leading-out member 210 can be realized through the limiting block 211 and the limiting groove 230, so that the connection stability and the connection safety of the subsequent battery module leading-out structure are facilitated.
Preferably, the module bus bar lead-out member 210 includes two end portions and a middle portion between the two end portions, the above-mentioned stopper 211 is provided on the middle portion, and the stopper 211 is received in the stopper groove 231. Specifically, the module converging and leading-out member 210 is a plate-shaped structure, and a first protruding structure is arranged on the surface of the module converging and leading-out member 210 in the width direction, and the first protruding structure is a limiting block 211; the insulating position-limiting member 230 is provided with a first groove structure, a part of the module confluence leading-out member 210 is accommodated in the first groove structure, and the first groove structure is provided with a position-limiting groove 231 matched with the first protrusion structure.
Preferably, the thickness of the limiting block 211 is smaller than the depth of the limiting groove 231, so as to provide enough process margin for the limiting groove 231, so that the module confluence lead-out piece is convenient to mount and prevent dislocation, and the module confluence lead-out piece 210 is prevented from being mounted in place.
One end of the crossover 220 is stacked on a surface of the module busbar lead-out 210 facing away from the insulation stopper 230, and one end of the module busbar lead-out 210 is electrically connected to the crossover 220. Preferably, the module bus bar lead-out member 210 is welded or riveted with the crossover member 220. Specifically, the module bus bar outgoing member 210 is provided with a first welding terminal 310, the two ends of the bridging member 220 are respectively provided with a second welding terminal 320, and the first welding terminal 310 can be welded and fixed with any one of the second welding terminals 320.
Preferably, a first connecting structure is disposed on a surface of the module bus bar leading-out member 210, a second connecting structure is disposed on a surface of the bridging member 220, and the first connecting structure and the second connecting structure are connected in a matching manner. Wherein, the first connecting structure is a second protrusion structure 510, and the second connecting structure is a second groove structure 520; the height of the second protrusion structure 510 is 0.2-3 times of the thickness of the module bus bar 210, and the width of the second protrusion structure 510 is 0.2-1.0 times of the width of the module bus bar 210; the depth of the second groove structure 520 is 0.2-1.0 times the thickness of the crossover 220, and the width of the second groove structure 520 is 0.2-1.0 times the width of the crossover 220. Or, a first connection structure is disposed on the surface of the module bus leading-out member 210, a second connection structure is disposed on the surface of the bridging member 220, and the first connection structure and the second connection structure are connected in a matching manner. Specifically, the second connecting structure is a second protrusion structure 510, and the first connecting structure is a second groove structure 520; the height of the second protrusion 510 is 0.2-3 times of the thickness of the bridging member 220, and the width of the second protrusion 510 is 0.2-1.0 times of the width of the bridging member 220; the depth of the second groove structure 520 is 0.2-1.0 times of the thickness of the module bus bar 210, and the width of the second groove structure 520 is 0.2-1.0 times of the width of the module bus bar 210.
Preferably, the number of the first connection structures is the same as the number of the second connection structures, and the number of the first connection structures and the second connection structures is at least one.
Preferably, the second protrusion structure 510 may have one of a circular shape, an elliptical shape, a parallelogram shape and an N-sided polygon shape, where N is an integer greater than 2; the second groove structure 520 may have one of a circle, a parallelogram, and an N-sided polygon, where N is an integer greater than 2; wherein the shape of the second protrusion structure 510 matches the shape of the second groove structure 520.
Specifically, a second protrusion structure 510 is disposed on the first welding end 310, a second groove structure 520 is disposed on the second welding end 320, the height of the second groove structure 520 is 0.5-1.5 times the height of the second protrusion structure 510, the width of the second groove structure 520 is 0.5-1.5 times the width of the second protrusion structure 510, a dimension space of a welding process is reserved by the dimension design, interference fit is formed in the height direction, tight fit is formed in the height direction and the direction perpendicular to the height direction, and specifically, the second protrusion structure 510 and the second groove structure 520 are circular and can be connected in a matched manner. The round structure is convenient to install and can prevent dislocation. The first welding end 310 and the second welding end 320 are fixed, the second protruding structure 510 and the second groove structure 520 are in clearance fit, then under the pressing effect of a welding device pressure head, the top of the second groove structure 520 and the bottom of the second protruding structure 510 are in full contact with each other, however, a micro-gap still exists between the second protruding structure 510 and the second groove structure 520, after the pre-pressure preset value is reached to 1500N-5000N, the welding device pressure head can generate high-frequency vibration parallel to a welding plane, under the effect of the compaction and the high-frequency vibration of the welding device pressure head, the first welding end 310 and the second welding end 320 can be welded together, and the firmness can be greatly improved.
In addition, the bridging element 220 is covered with a stretchable heat-shrinkable insulating layer 400, and after the first welding end 310 and the second welding end 320 are welded and fixed, the heat-shrinkable insulating layer 400 can be stretched and the first welding end 310 and the second welding end 320 can be covered, so that the insulation protection of the connection position of the module bus leading-out element 210 and the bridging element 220 can be realized.
When the second welding end 320 of the other end of the bridging member 220 is connected to the first welding end 310 of the other module bus bar lead-out member 210, the bending deformation part 221 of the bridging member 220 is ensured to be in a non-tight state, so that a relative movement buffer space between the modules can be reserved.
In addition, in order to satisfy the requirements of the connection strength and the overcurrent ratio between the module busbar lead 210 and the crossover 220, the welding area of the first welding end 310 of the module busbar lead 210 beyond the boundary portion of the insulation stopper 230 of the battery module may be varied, and the variation may be achieved by varying the welding number or the welding sectional area.
Furthermore, the fixing method is not limited to ultrasonic metal welding, and other fixing methods such as SPR self-piercing riveting can be adopted, and only the module bus leading-out member 210 and the bridging member 220 need to be fixed.
The module confluence leading-out member 210 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like; the bridging piece 220 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like.
The application provides a battery module, including module body and above-mentioned battery module extraction structure, preferably, insulating locating part 230 and the bottom plate or the roof mechanical interlocking and the screw connection of module body, the electric core utmost point ear intercommunication interconnection of insulating locating part 230 and module body simultaneously.
The application provides a battery pack, including battery pack busbar and a plurality of battery module as above, it is a plurality of battery module passes through the crossover piece electricity is connected.
Example 3
Referring to fig. 2 and 5, the battery module lead-out structure provided by the present invention includes a module bus lead-out member 210, a bridging member 220, and an insulation limit member 230.
The insulation limiting part 230 is connected to the module body and used for limiting the module confluence leading-out part 210, and is fixed on the module body through the insulation limiting part 230, so that potential safety hazards caused by short circuit or heat generation due to displacement of the limiting module confluence leading-out part 210 are solved, and on the other hand, the insulation limiting part 230 has insulation performance, so that the safety performance is further improved; the module busbar lead-out member 210 led out from the module body is electrically connected to the crossover member 220, and preferably, the module busbar lead-out member 210 and the crossover member 220 are directly fixed.
The terms "plurality", "at least one" as used herein mean 2 to 100.
The module bus lead-out member of the present disclosure refers to a lead-out structure for summarizing the total positive electrode and the total negative electrode of each battery module current.
Preferably, the insulating limiting member 230 is provided with a limiting groove 231, the module convergence leading-out member 210 is provided with a limiting block 211, the limiting block 211 is connected with the limiting groove 230 in a matching manner, and the positioning of the module convergence leading-out member 210 can be realized through the limiting block 211 and the limiting groove 230, so that the connection stability and the connection safety of the subsequent battery module leading-out structure are facilitated.
Preferably, the module bus bar lead-out member 210 includes two end portions and a middle portion between the two end portions, the above-mentioned stopper 211 is provided on the middle portion, and the stopper 211 is received in the stopper groove 231. Specifically, the module converging and leading-out member 210 is a plate-shaped structure, and a first protruding structure is arranged on the surface of the module converging and leading-out member 210 in the width direction, and the first protruding structure is a limiting block 211; the insulating position-limiting member 230 is provided with a first groove structure, a part of the module confluence leading-out member 210 is accommodated in the first groove structure, and the first groove structure is provided with a position-limiting groove 231 matched with the first protrusion structure.
Preferably, the thickness of the limiting block 211 is smaller than the depth of the limiting groove 231, so as to provide enough process margin for the limiting groove 231, so that the module confluence lead-out piece is convenient to mount and prevent dislocation, and the module confluence lead-out piece 210 is prevented from being mounted in place.
One end of the crossover 220 is stacked on a surface of the module busbar lead-out 210 facing away from the insulation stopper 230, and one end of the module busbar lead-out 210 is electrically connected to the crossover 220. Preferably, the module bus bar lead-out member 210 is welded or riveted with the crossover member 220. Specifically, the module bus bar outgoing member 210 is provided with a first welding terminal 310, the two ends of the bridging member 220 are respectively provided with a second welding terminal 320, and the first welding terminal 310 can be welded or riveted with any one of the second welding terminals 320.
Preferably, a first connecting structure is disposed on a surface of the module bus bar leading-out member 210, a second connecting structure is disposed on a surface of the bridging member 220, and the first connecting structure and the second connecting structure are connected in a matching manner. Wherein, the first connecting structure is a second protrusion structure 510, and the second connecting structure is a second groove structure 520; the height of the second protrusion structure 510 is 0.2-3 times of the thickness of the module bus bar 210, and the width of the second protrusion structure 510 is 0.2-1.0 times of the width of the module bus bar 210; the depth of the second groove structure 520 is 0.2-1.0 times the thickness of the crossover 220, and the width of the second groove structure 520 is 0.2-1.0 times the width of the crossover 220. Or, a first connection structure is disposed on the surface of the module bus leading-out member 210, a second connection structure is disposed on the surface of the bridging member 220, and the first connection structure and the second connection structure are connected in a matching manner. Specifically, the second connecting structure is a second protrusion structure 510, and the first connecting structure is a second groove structure 520; the height of the second protrusion 510 is 0.2-3 times of the thickness of the bridging member 220, and the width of the second protrusion 510 is 0.2-1.0 times of the width of the bridging member 220; the depth of the second groove structure 520 is 0.2-1.0 times of the thickness of the module bus bar 210, and the width of the second groove structure 520 is 0.2-1.0 times of the width of the module bus bar 210.
Preferably, the number of the first connection structures is the same as the number of the second connection structures, and the number of the first connection structures and the second connection structures is at least one.
Preferably, the shape of the second protrusion structure may be one of a circle, an ellipse, a parallelogram, and an N-polygon, where N is an integer greater than 2; the shape of the second groove structure can be one of a circle, a parallelogram and an N-edge, wherein N is an integer greater than 2; wherein the shape of the second projection structure matches the shape of the second groove structure.
Specifically, two second protruding structures 510 are arranged on the first welding end 310, two second groove structures 520 are arranged on the second welding end 320, the height of each second groove structure 520 is 0.5-1.5 times of the height of each second protruding structure 510, the width of each second groove structure 520 is 0.5-1.5 times of the width of each second protruding structure 510, a welding process size space is reserved by the size design, interference fit is formed in the height direction, and tight fit is formed in the height direction and the direction perpendicular to the height direction. Specifically, the second protrusion 510 and the second groove 520 are rectangular and can be connected to each other in a matching manner. The rectangular structure is convenient for positioning the module confluence leading-out piece and the bridging piece.
The first welding end 310 and the second welding end 320 are fixed, each second protruding structure 510 and one second groove structure 520 can be in clearance fit, then under the pressing-down action of a welding equipment pressure head, the top of each second groove structure 520 and the periphery of the bottom of each second protruding structure 510 are in full contact, a micro-gap still exists between each second protruding structure 510 and each second groove structure 520, when the pre-pressure preset value is 1500N-5000N, the welding equipment pressure head can vibrate in a high frequency mode parallel to a welding plane, and under the action of compaction and high frequency vibration of the welding equipment pressure head, the first welding end 310 and the second welding end 320 can be welded together, so that firmness can be greatly improved.
In addition, the bridging element 220 is covered with a stretchable heat-shrinkable insulating layer 400, and after the first welding end 310 and the second welding end 320 are welded and fixed, the heat-shrinkable insulating layer 400 can be stretched and the first welding end 310 and the second welding end 320 can be covered, so that the insulation protection of the connection position of the module bus leading-out element 210 and the bridging element 220 can be realized.
When the second welding end 320 of the other end of the bridging member 220 is connected to the first welding end 310 of the other module bus bar lead-out member 210, the bending deformation part 221 of the bridging member 220 is ensured to be in a non-tight state, so that a relative movement buffer space between the modules can be reserved.
In addition, in order to satisfy the connection strength and the overcurrent rate requirements of the module busbar lead 210 and the crossover 220, the welding area of the welding end 310 of the module busbar lead 210 beyond the boundary portion of the insulation stopper 230 of the battery module may be varied, and the variation may be achieved by varying the number of welds or the size of the welding cross-sectional area.
Furthermore, the fixing method is not limited to ultrasonic metal welding, and other fixing methods such as SPR self-piercing riveting can be adopted, and only the module bus leading-out member 210 and the bridging member 220 need to be fixed.
The module confluence leading-out member 210 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like; the bridging piece 220 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like.
The application provides a battery module, including module body and above-mentioned battery module extraction structure, preferably, insulating locating part 230 and the bottom plate or the roof mechanical interlocking and the screw connection of module body, the electric core utmost point ear intercommunication interconnection of insulating locating part 230 and module body simultaneously.
The application provides a battery pack, including battery pack busbar and a plurality of battery module as above, it is a plurality of battery module passes through the crossover piece electricity is connected. Example 4
Referring to fig. 2 and 6, the battery module lead-out structure provided by the present invention includes a module bus lead-out member 210, a bridging member 220, and an insulation limit member 230.
The insulation limiting part 230 is connected to the module body and used for limiting the module confluence leading-out part 210, and is fixed on the module body through the insulation limiting part 230, so that potential safety hazards caused by short circuit or heat generation due to displacement of the limiting module confluence leading-out part 210 are solved, and on the other hand, the insulation limiting part 230 has insulation performance, so that the safety performance is further improved; the module busbar lead-out member 210 led out from the module body is electrically connected to the crossover member 220, and preferably, the module busbar lead-out member 210 and the crossover member 220 are directly fixed.
The terms "plurality", "at least one" as used herein mean 2 to 100.
The module bus lead-out member of the present disclosure refers to a lead-out structure for summarizing the total positive electrode and the total negative electrode of each battery module current.
Preferably, the insulating limiting member 230 is provided with a limiting groove 231, the module convergence leading-out member 210 is provided with a limiting block 211, the limiting block 211 is connected with the limiting groove 230 in a matching manner, and the positioning of the module convergence leading-out member 210 can be realized through the limiting block 211 and the limiting groove 230, so that the connection stability and the connection safety of the subsequent battery module leading-out structure are facilitated.
Preferably, the module bus bar lead-out member 210 includes two end portions and a middle portion between the two end portions, the above-mentioned stopper 211 is provided on the middle portion, and the stopper 211 is received in the stopper groove 231. Specifically, the module converging and leading-out member 210 is a plate-shaped structure, and a first protruding structure is arranged on the surface of the module converging and leading-out member 210 in the width direction, and the first protruding structure is a limiting block 211; the insulating position-limiting member 230 is provided with a first groove structure, a part of the module confluence leading-out member 210 is accommodated in the first groove structure, and the first groove structure is provided with a position-limiting groove 231 matched with the first protrusion structure.
Preferably, the thickness of the limiting block 211 is smaller than the depth of the limiting groove 231, so as to provide enough process margin for the limiting groove 231, so that the module confluence lead-out piece is convenient to mount and prevent dislocation, and the module confluence lead-out piece 210 is prevented from being mounted in place.
One end of the crossover 220 is stacked on a surface of the module busbar lead-out 210 facing away from the insulation stopper 230, and one end of the module busbar lead-out 210 is electrically connected to the crossover 220. Preferably, the module bus bar lead-out member 210 is welded or riveted with the crossover member 220. Specifically, the module bus bar outgoing member 210 is provided with a first welding terminal 310, the two ends of the bridging member 220 are respectively provided with a second welding terminal 320, and the first welding terminal 310 can be welded and fixed with any one of the second welding terminals 320.
Preferably, a first connecting structure is disposed on a surface of the module bus bar leading-out member 210, a second connecting structure is disposed on a surface of the bridging member 220, and the first connecting structure and the second connecting structure are connected in a matching manner. Wherein, the first connecting structure is a second protrusion structure 510, and the second connecting structure is a second groove structure 520; the height of the second protrusion structure 510 is 0.2-3 times of the thickness of the module bus bar 210, and the width of the second protrusion structure 510 is 0.2-1.0 times of the width of the module bus bar 210; the depth of the second groove structure 520 is 0.2-1.0 times the thickness of the crossover 220, and the width of the second groove structure 520 is 0.2-1.0 times the width of the crossover 220. Or, a first connection structure is disposed on the surface of the module bus leading-out member 210, a second connection structure is disposed on the surface of the bridging member 220, and the first connection structure and the second connection structure are connected in a matching manner. Specifically, the second connecting structure is a second protrusion structure 510, and the first connecting structure is a second groove structure 520; the height of the second protrusion 510 is 0.2-3 times of the thickness of the bridging member 220, and the width of the second protrusion 510 is 0.2-1.0 times of the width of the bridging member 220; the depth of the second groove structure 520 is 0.2-1.0 times of the thickness of the module bus bar 210, and the width of the second groove structure 520 is 0.2-1.0 times of the width of the module bus bar 210.
Preferably, the number of the first connection structures is the same as the number of the second connection structures, and the number of the first connection structures and the second connection structures is at least one.
Preferably, the shape of the second protrusion structure may be one of a circle, an ellipse, a parallelogram, and an N-polygon, where N is an integer greater than 2; the shape of the second groove structure can be one of a circle, a parallelogram and an N-edge, wherein N is an integer greater than 2; wherein the shape of the second projection structure matches the shape of the second groove structure.
Specifically, two second protruding structures 510 are arranged on the first welding end 310, two second groove structures 520 are arranged on the second welding end 320, the height of each second groove structure 520 is 0.5-1.5 times of the height of each second protruding structure 510, the width of each second groove structure 520 is 0.5-1.5 times of the width of each second protruding structure 510, a welding process size space is reserved by the size design, interference fit is formed in the height direction, and tight fit is formed in the height direction and the direction perpendicular to the height direction. Specifically, the second protrusion 510 and the second groove 520 are oval and can be connected with each other. The oval structure is convenient for positioning the module confluence leading-out piece and the bridging piece.
The first welding end 310 and the second welding end 320 are fixed, each second protruding structure 510 and one second groove structure 520 can be in clearance fit, then under the pressing-down action of a welding equipment pressure head, the top of each second groove structure 520 and the periphery of the bottom of each second protruding structure 510 are in full contact, a micro-gap still exists between each second protruding structure 510 and each second groove structure 520, when the pre-pressure preset value is 1500N-5000N, the welding equipment pressure head can vibrate in a high frequency mode parallel to a welding plane, and under the action of compaction and high frequency vibration of the welding equipment pressure head, the first welding end 310 and the second welding end 320 can be welded together, so that firmness can be greatly improved.
In addition, the bridging element 220 is covered with a stretchable heat-shrinkable insulating layer 400, and after the first welding end 310 and the second welding end 320 are welded and fixed, the heat-shrinkable insulating layer 400 can be stretched and the first welding end 310 and the second welding end 320 can be covered, so that the insulation protection of the connection position of the module bus leading-out element 210 and the bridging element 220 can be realized.
When the second welding end 320 of the other end of the bridging member 220 is connected to the first welding end 310 of the other module bus bar lead-out member 210, the bending deformation part 221 of the bridging member 220 is ensured to be in a non-tight state, so that a relative movement buffer space between the modules can be reserved.
In addition, in order to satisfy the requirements of the connection strength and the overcurrent ratio between the module busbar lead 210 and the crossover 220, the welding area of the first welding end 310 of the module busbar lead 210 beyond the boundary portion of the insulation stopper 230 of the battery module may be varied, and the variation may be achieved by varying the welding number or the welding sectional area.
Furthermore, the fixing method is not limited to ultrasonic metal welding, and other fixing methods such as SPR self-piercing riveting can be adopted, and only the module bus leading-out member 210 and the bridging member 220 need to be fixed. The number and shape of the second protrusion structures 510 and the second groove structures 520 in the present application are not limited to the above embodiments, and other shapes or numbers or interchanges and any combination of the above embodiments may be adopted, which may be determined according to the actual requirement.
The module confluence leading-out member 210 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like; the bridging piece 220 has a plate-shaped or sheet-shaped structure, and may be one or more of a copper sheet, an aluminum sheet, a nickel sheet, a gold sheet, and the like.
The application provides a battery module, including module body and above-mentioned battery module extraction structure, preferably, insulating locating part 230 and the bottom plate or the roof mechanical interlocking and the screw connection of module body, the electric core utmost point ear intercommunication interconnection of insulating locating part 230 and module body simultaneously.
The application provides a battery pack, including battery pack busbar and a plurality of battery module as above, it is a plurality of battery module passes through the crossover piece electricity is connected.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (14)
1. A battery module leading-out structure is characterized by comprising a bridging piece, an insulating limiting piece and a module converging leading-out piece led out from a module body; the insulating limiting part is connected to the module body and used for limiting the module confluence leading-out part, and the module confluence leading-out part is electrically connected with the bridging part.
2. The battery module leading-out structure according to claim 1, wherein a limiting groove is formed on the insulating limiting member, a limiting member is formed on the module confluence leading-out member, and the limiting member is connected with the limiting groove in a matching manner.
3. The battery module lead-out structure according to claim 2, wherein the module confluence lead-out member comprises two end portions and a middle portion between the two end portions, the middle portion is provided with a limiting block, and the limiting block is accommodated in the limiting groove.
4. The battery module leading-out structure according to claim 2 or 3, wherein the module confluence leading-out member is a plate-shaped structure, a first protruding structure is arranged on the surface of the module confluence leading-out member along the width direction, and the first protruding structure is a limiting block; the insulating limiting part is provided with a first groove structure, a part of the module confluence leading-out part is accommodated in the first groove structure, and the first groove structure is provided with a limiting groove matched with the first protruding structure.
5. The battery module lead-out structure according to claim 4, wherein the thickness of the limiting block is smaller than the depth of the limiting groove.
6. The battery module lead-out structure according to claim 3, wherein one end of the crossover is superposed on a surface of the module busbar lead-out member facing away from the insulation stopper, and one end of the module busbar lead-out member is electrically connected to the crossover.
7. The battery module leading-out structure according to claim 4, wherein a first connecting structure is arranged on the surface of the module confluence leading-out member, a second connecting structure is arranged on the surface of the bridging member, and the first connecting structure and the second connecting structure are connected in a matching manner.
8. The battery module lead-out structure according to claim 7, wherein the first connecting structure is a second protrusion structure, and the second connecting structure is a second groove structure; the depth of the second groove structure is 0.5-1.5 times of the height of the second protrusion structure, and the width of the second groove structure is 0.5-1.5 times of the width of the second protrusion structure.
9. The battery module lead-out structure according to claim 7, wherein the second connecting structure is a second protrusion structure, and the first connecting structure is a second groove structure; the depth of the second groove structure is 0.5-1.5 times of the height of the second protrusion structure, and the width of the second groove structure is 0.5-1.5 times of the width of the second protrusion structure.
10. The battery module lead-out structure according to claim 8 or 9, wherein the second protrusion structure is in the shape of one or more of a circle, an ellipse, a parallelogram and an N-sided polygon, wherein N is an integer greater than 2; the shape of the second groove structure is one or more of a circle, a parallelogram and an N-edge, wherein N is an integer greater than 2; the shape and the number of the second protruding structures are matched with those of the second groove structures.
11. The battery module lead-out structure according to claim 1, wherein the crossover is covered with a stretchable heat-shrinkable insulating layer.
12. The battery module lead-out structure according to claim 1, wherein the module busbar lead-out member is welded or riveted to the crossover.
13. A battery module, characterized in that the battery module comprises a module body and the battery module lead-out structure of any one of claims 1 to 12.
14. A battery pack comprising a battery pack bus bar and the plurality of battery modules according to claim 13, the plurality of battery modules being electrically connected to the battery pack bus bar through the crossover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983054.2U CN210489719U (en) | 2019-06-27 | 2019-06-27 | Battery module leading-out structure, battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983054.2U CN210489719U (en) | 2019-06-27 | 2019-06-27 | Battery module leading-out structure, battery module and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210489719U true CN210489719U (en) | 2020-05-08 |
Family
ID=70529247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920983054.2U Active CN210489719U (en) | 2019-06-27 | 2019-06-27 | Battery module leading-out structure, battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210489719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021249349A1 (en) * | 2020-06-07 | 2021-12-16 | 厦门海辰新能源科技有限公司 | Connecting assembly, battery module and battery pack |
-
2019
- 2019-06-27 CN CN201920983054.2U patent/CN210489719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021249349A1 (en) * | 2020-06-07 | 2021-12-16 | 厦门海辰新能源科技有限公司 | Connecting assembly, battery module and battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102378374B1 (en) | Battery Module Having Bus-bar and Battery Pack | |
| CN112803122B (en) | Battery module with locking mechanism, array type large module, battery pack and power supply | |
| CN111900320B (en) | Electrode assembly and rechargeable battery | |
| JP2014524126A (en) | Connector between battery modules and battery system including the same | |
| CN208256788U (en) | A kind of soft bag lithium ionic cell module | |
| KR100627360B1 (en) | Plate used to collect current, secondary battery and module thereof | |
| CN109742304A (en) | A kind of power battery module and electric vehicle | |
| CN207338510U (en) | A kind of battery pack | |
| CN210489719U (en) | Battery module leading-out structure, battery module and battery pack | |
| CN210467966U (en) | Tab dislocation connection structure, electric core group and battery pack | |
| CN215451691U (en) | Electric connector and power battery | |
| US20060040176A1 (en) | Prismatic battery cells, batteries with prismatic battery cells and methods of making same | |
| CN110350137A (en) | A kind of battery modules deriving structure and preparation method thereof, battery modules and battery pack | |
| CN201478368U (en) | Battery module connecting piece and battery system using same | |
| CN209104206U (en) | Battery modules | |
| CN111129419A (en) | Battery tab structure, preparation method thereof and water-based battery | |
| CN215911557U (en) | Battery core pole piece, battery core pole group and battery core | |
| CN211017226U (en) | Soft packet of power battery module connects insulating protector | |
| CN210224146U (en) | Battery module | |
| CN205543004U (en) | Built -up connection structure of power battery group | |
| CN209786058U (en) | Battery pack, electric equipment and movable platform | |
| CN105552288A (en) | Combined connection structure for power battery pack | |
| CN209571474U (en) | A kind of power battery module and electric vehicle | |
| CN101800329A (en) | Battery pack | |
| CN112531294A (en) | Soft package lithium ion battery tab connecting piece and connecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210329 Address after: Room 201, building a, Xingli Zundian furniture factory, No.1 shouhe Road, Jinsha community, Kengzi street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Evergrande new energy technology (Shenzhen) Co.,Ltd. Patentee after: SHANGHAI CENAT NEW ENERGY Co.,Ltd. Patentee after: NANCHANG CENAT NEW ENERGY Co.,Ltd. Patentee after: GUANGXI CENAT NEW ENERGY Co.,Ltd. Patentee after: JIANGSU CENAT NEW ENERGY Co.,Ltd. Address before: 518052 Room 201, building a, No.1 Qianhai 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen City, Guangdong Province Patentee before: Hengda New Energy Technology Group Co.,Ltd. Patentee before: SHANGHAI CENAT NEW ENERGY Co.,Ltd. Patentee before: NANCHANG CENAT NEW ENERGY Co.,Ltd. Patentee before: GUANGXI CENAT NEW ENERGY Co.,Ltd. Patentee before: JIANGSU CENAT NEW ENERGY Co.,Ltd. |