CN203165971U - Power supply module of electric car - Google Patents
Power supply module of electric car Download PDFInfo
- Publication number
- CN203165971U CN203165971U CN2013201105088U CN201320110508U CN203165971U CN 203165971 U CN203165971 U CN 203165971U CN 2013201105088 U CN2013201105088 U CN 2013201105088U CN 201320110508 U CN201320110508 U CN 201320110508U CN 203165971 U CN203165971 U CN 203165971U
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- battery unit
- fixed frame
- copper
- aluminium
- power supply
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to the field of the automobile power supply, and in particular relates to a power supply module of an electric car. The power supply module of the electric car comprises a plurality of positive battery units, a plurality of negative battery units and a plurality of bus bars, wherein each positive battery unit is provided with a fixed framework and two aluminum lugs with one ends stretching out of one side edge of the fixed framework, the negative battery units and the positive battery units are arranged at intervals, each negative battery unit is provided with a fixed framework and two copper lugs with one ends stretching out of one side edge of the fixed framework, and the positive battery units are connected with the negative battery units in series through the bus bars; and one aluminum lug of each of two adjacent positive battery units and one copper lug of the negative battery unit are respectively in welding connection with one bus bar. The contact resistance on the junction of the power supply module of the electric car is small, the heat is difficult to produce, the efficiency is high, the loosening can be avoided in the application process, and the safety is good.
Description
Technical field
The utility model relates to the automobile power field of power supplies, especially a kind of electric car power supply module.
Background technology
The electric car power supply modularized design has become the inexorable trend of dynamic power system development; The disclosure of the Invention of Chinese patent notification number CN102306717A a kind of used for electric vehicle lithium-ion-power cell bag and preparation method thereof, described used for electric vehicle lithium-ion-power cell bag, comprise power brick housing and the battery clad adaptive with the power brick housing, be provided with battery module in described power brick enclosure interior; Between described battery module and described battery clad, be provided with insulating barrier I, and the battery clad over against power brick housing face and battery module between be provided with insulating barrier II; Described power brick housing is provided with the fast connector that is connected with battery module, is positioned at the mutual clamping of the adjacent battery module of power brick enclosure interior; This used for electric vehicle lithium-ion-power cell bag is the electric car power supply module, described battery module is battery unit, at present the connected mode between the battery unit of electric car power supply module adopts mechanical fasteners modes such as screw is fastening, plug-in unit clamping more, and these connected modes exist junction contact impedance Da Yi heating efficiency lower and in use because vibration can produce the loosening deficiency that potential safety hazard is arranged; Therefore, design a kind of higherly and in use can not produce the loosening good electric car power supply module of fail safe at the little heating efficiency that is difficult for of junction contact impedance, become problem demanding prompt solution.
The utility model content
The purpose of this utility model is to exist junction contact impedance Da Yi heating efficiency lower and in use because vibration can produce the loosening deficiency that potential safety hazard is arranged for the connection between the battery unit that overcomes present electric car power supply module; , provide a kind of higher and in use can not produce the loosening good electric car power supply module of fail safe at the little heating efficiency that is difficult for of junction contact impedance.
Concrete technical scheme of the present utility model is:
A kind of electric car power supply module, several that comprise several positive battery unit that have fixed frame and an end and stretch out two outer aluminium pole ears of a side of fixed frame, arrange with the positive battery unit interval have the negative battery unit that fixed frame and an end stretch out two outer copper polar ears of a side of fixed frame, several bus-bars that are used for being connected in series positive battery unit and negative battery unit; Aluminium pole ears of two adjacent positive battery unit and a copper polar ear of negative battery unit respectively with a bus-bar welding.This electric car power supply module is higher and in use can not produce loosening fail safe good at the little heating efficiency that is difficult for of junction contact impedance.
As preferably, be inlaid with two metal support pieces outside the side of the fixed frame of described positive battery unit; Aluminium pole ears comprises that two ends stretch out the outer aluminium lateral plate and the aluminium transverse slat of pushing down a metal support piece and being connected with an end of two aluminium lateral plates of a side of fixed frame; The one side outside of the fixed frame of negative battery unit is inlaid with two metal support pieces; Copper polar ear comprises that two ends stretch out the outer copper side plate and the copper transverse slat of pushing down a metal support piece and being connected with an end of two blocks of copper side plates of a side of fixed frame.Aluminium pole ears or copper polar ear are pushed down metal support piece good rigidly.
As preferably, an end of described metal support piece is provided with arcwall face.Aluminium pole ears or copper polar ear well contact and are beneficial to welding with the metal support piece.
As preferably, described bus-bar comprises aluminium flake and copper sheet; One end of aluminium flake is provided with several grooves along thickness direction; One end of copper sheet is provided with the projection of several and groove coupling along thickness direction; Projection inserts in the groove and solid-state diffusion connects; An aluminium transverse slat and a metal support piece laser welding of the aluminium flake of a bus-bar and a positive battery unit, a copper transverse slat and a metal support piece laser welding of the negative battery unit that copper sheet and are adjacent.It is a kind of advanced method of attachment that links together at solid-state material of the same race with two or xenogenesis down that solid-state diffusion connects; This method both can connect mild steel, also can connect pottery, in addition can also connect traditional welding method the material that can not connect; It is little that the aluminium flake of bus-bar and copper sheet solid-state diffusion are connected contact impedance; Laser welding, laser beam can focus on very little zone, the distortion that thermal impact causes and metallographic excursion are little, but the small-sized welded part that weld interval is very near and laser can be placed on from the distance suitable with welded part, when laser welding thin material or thin footpath wire rod, can not produce melt back as arc welding; Laser welding is not influenced by or not magnetic field can aim at weldment accurately; Contact impedance is little after the aluminium flake of same type of material and aluminium transverse slat or copper sheet and the copper transverse slat laser welding.
As preferably, the shape of cross section of described groove is triangle; The shape of cross section of projection is triangle.Be easy to make and the big bonding strength height of contact-making surface.
As preferably, an end face of described fixed frame is provided with several alignment pins; The other end of fixed frame is provided with several location holes with the alignment pin coupling; The alignment pin of a fixed frame inserts in the location hole of another adjacent fixed frame.Location convenient for assembly.
The method of attachment of described electric car power supply module compresses the back solid-state diffusion in the groove of the projection insertion aluminium flake of the copper sheet of (1) bus-bar and connects; (2) the special fixture fixing is arranged and used to several positive battery unit and several negative battery unit intervals; (3) be placed on the aluminium flake of bus-bar and copper sheet on corresponding aluminium transverse slat and the copper transverse slat respectively and use the special fixture fixing; (4) several good positive battery unit of fixing are placed in the fully sheathed case with vacuum or negative pressure that only exposes the welding position with several negative battery unit and bus-bar; (5) respectively corresponding aluminium flake, aluminium transverse slat and metal support piece are carried out laser welding with laser and corresponding copper sheet, copper transverse slat and metal support piece carry out laser welding.Method of attachment is practical reliable.
As preferably, the relevant parameter of described laser for laser welding: power, 600W; Zlasing mode, pulse fiber; Focus on F-200mm; The angle of inclination, 10 °; When the welded part material is aluminium, thickness of coating is 0.4mm, and aluminium pole ears thickness is 0.2mm, the parameter setting when metal support piece thickness is 3mm: frequency 10Hz, and pulsewidth 10ms, power 5.4kw (90%) defocuses+8.5mm, speed 7mm/s, subsidy gas N2; When the welded part material is copper, thickness of coating is 0.4mm, and copper polar ear thickness is 0.2mm, the parameter setting when metal support piece thickness is 3mm: frequency 10Hz, and pulsewidth 10ms, power 5.4kW (90%) defocuses+5.0mm, speed 4mm/s, subsidy gas Air.The parameter setting of laser and laser welding is applicable to that needs and the effect of electric car power supply module laser welding is better.
Compared with prior art, the beneficial effects of the utility model are: one. this electric car power supply module is higher and in use can not produce loosening fail safe good at the little heating efficiency that is difficult for of junction contact impedance.Two. aluminium pole ears or copper polar ear are pushed down metal support piece good rigidly.Three. an end of metal support piece is provided with arcwall face, and aluminium pole ears or copper polar ear well contact and be beneficial to welding with the metal support piece.Four. it is little that the aluminium flake of bus-bar and copper sheet solid-state diffusion are connected contact impedance; Contact impedance is little after the aluminium flake of same type of material and aluminium transverse slat or copper sheet and the copper transverse slat laser welding.Five. the shape of cross section of groove and projection is triangle, is easy to make and the big bonding strength height of contact-making surface.Six. fixed frame is provided with alignment pin and location hole location convenient for assembly.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the structural representation of positive battery unit among Fig. 1;
Fig. 3 is the structural representation of bus-bar among Fig. 1.
Among the figure: metal support piece-1, arcwall face-11, aluminium pole ears-2, aluminium lateral plate-21, aluminium transverse slat-22, positive battery unit-3, copper polar ear-4, copper side plate-41, copper transverse slat-42, negative battery unit-5, bus-bar-6, aluminium flake-61, groove-62, copper sheet-63, projection-64, fixed frame-7, alignment pin-71, location hole-72, electric core-8.
Embodiment
Below in conjunction with shown in the accompanying drawing the utility model is described further.
Shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3: a kind of electric car power supply module, comprise five have positive battery unit 3 that fixed frame 7 and an end stretch out two outer aluminium pole ears 2 of a side of fixed frame 7, with positive battery unit 3 spaced five have fixed frame 7 and an end stretch out the negative battery unit 5 of two outer copper polar ears 4 of a side of fixed frame 7, for nine bus-bars 6 that are connected in series positive battery unit 3 and negative battery unit 5; Aluminium pole ears 2 of two adjacent positive battery unit 3 and a copper polar ear 4 of negative battery unit 5 respectively with 6 welding of a bus-bar.One end face of described fixed frame 7 is provided with six alignment pins 71; The other end of fixed frame 7 has six location holes 72 with alignment pin 71 matched in clearance; The alignment pin 71 of a fixed frame 7 inserts in the location hole 72 of another adjacent fixed frame 7.Each positive battery unit 3 or negative battery unit 5 are made of electric core 8 parallel connections of one or more pieces polarity unanimities.
In the present embodiment, each positive battery unit 3 or negative battery unit 5 are made of electric core 8 parallel connections of two polarity unanimities; The one side outside of the fixed frame 7 of described positive battery unit 3 is inlaid with two metal support pieces 1; One end of described metal support piece 1 has arcwall face 11; Aluminium pole ears 2 comprises that two ends stretch out the outer aluminium lateral plate 21 and the aluminium transverse slat 22 of pushing down a metal support piece 1 and being connected with an end of two aluminium lateral plates 21 of a side of fixed frame 7; Two aluminium lateral plates 21 and aluminium transverse slat 22 one constitute; The one side outside of the fixed frame 7 of negative battery unit 5 is inlaid with two metal support pieces 1; Copper polar ear 4 comprises that two ends stretch out the outer copper side plate 41 and the copper transverse slat 42 of pushing down a metal support piece 1 and being connected with an end of two blocks of copper side plates 41 of a side of fixed frame 7; Two blocks of copper side plates 41 and copper transverse slat 42 one constitute; The material of fixed frame 7 is plastics, and metal support piece 1 is embedded on the side of fixed frame 7 by injection mo(u)lding; Described bus-bar 6 comprises aluminium flake 61 and copper sheet 63; One end of aluminium flake 61 has two grooves 62 along thickness direction; One end of copper sheet 63 has two projections 64 with groove 62 interference fits along thickness direction; The shape of cross section of described groove 62 is triangle; The shape of cross section of projection 64 is triangle; Projection 64 inserts in the groove 62 and solid-state diffusion connects; An aluminium transverse slat 22 and metal support piece 1 laser welding of the aluminium flake 61 of a bus-bar 6 and a positive battery unit 3, a copper transverse slat 42 and metal support piece 1 laser welding of the negative battery unit 5 that copper sheet 63 and are adjacent.
The method of attachment of described electric car power supply module is characterized in that: compress the back solid-state diffusion in the groove 62 of the projection 64 insertion aluminium flakes 61 of the copper sheet 63 of (1) bus-bar 6 and connect; (2) several positive battery unit 3 and several negative battery unit 5 are spaced and use the special fixture fixing; (3) be placed on the aluminium flake 61 of bus-bar 6 and copper sheet 63 on corresponding aluminium transverse slat 22 and the copper transverse slat 42 respectively and use the special fixture fixing; (4) several good positive battery unit 3 of fixing are placed in the fully sheathed case with vacuum or negative pressure that only exposes the welding position with several negative battery unit 5 and bus-bar 6; (5) respectively corresponding aluminium flake 61, aluminium transverse slat 22 and metal support piece 1 are carried out laser welding with laser and corresponding copper sheet 63, copper transverse slat 42 and metal support piece 1 carry out laser welding.
The relevant parameter of described laser for laser welding: power, 600W; Zlasing mode, pulse fiber; Focus on F-200mm; The angle of inclination, 10 °; When the welded part material is aluminium, thickness of coating is 0.4mm, and aluminium pole ears 2 thickness are 0.2mm, the parameter setting when metal support piece 1 thickness is 3mm: frequency 10Hz, and pulsewidth 10ms, power 5.4kW (90%) defocuses+8.5mm, speed 7mm/s, subsidy gas N2; When the welded part material is copper, thickness of coating is 0.4mm, and copper polar ear 4 thickness are 0.2mm, the parameter setting when metal support piece 1 thickness is 3mm: frequency 10Hz, and pulsewidth 10ms, power 5.4kW (90%) defocuses+5.0mm, speed 4mm/s, subsidy gas Air.
The beneficial effects of the utility model are: this electric car power supply module is higher and in use can not produce loosening fail safe good at the little heating efficiency that is difficult for of junction contact impedance.Aluminium pole ears or copper polar ear are pushed down metal support piece good rigidly.One end of metal support piece is provided with arcwall face, and aluminium pole ears or copper polar ear well contact and be beneficial to welding with the metal support piece.It is little that the aluminium flake of bus-bar and copper sheet solid-state diffusion are connected contact impedance; Contact impedance is little after the aluminium flake of same type of material and aluminium transverse slat or copper sheet and the copper transverse slat laser welding.The shape of cross section of groove and projection is triangle, is easy to make and the big bonding strength height of contact-making surface.Fixed frame is provided with alignment pin and location hole location convenient for assembly.
It is apparent to one skilled in the art that the utility model can be changed into multiple mode, and such change is not thought and broken away from scope of the present utility model.The apparent modification of the technical staff to described field that all are such will be included within the scope of this claim.
Claims (6)
1. electric car power supply module is characterized in that: several that comprise several positive battery unit that have fixed frame and an end and stretch out two outer aluminium pole ears of a side of fixed frame, arrange with the positive battery unit interval have the negative battery unit that fixed frame and an end stretch out two outer copper polar ears of a side of fixed frame, several bus-bars that are used for being connected in series positive battery unit and negative battery unit; Aluminium pole ears of two adjacent positive battery unit and a copper polar ear of negative battery unit respectively with a bus-bar welding.
2. electric car power supply module according to claim 1 is characterized in that: be inlaid with two metal support pieces outside the side of the fixed frame of described positive battery unit; Aluminium pole ears comprises that two ends stretch out the outer aluminium lateral plate and the aluminium transverse slat of pushing down a metal support piece and being connected with an end of two aluminium lateral plates of a side of fixed frame; The one side outside of the fixed frame of negative battery unit is inlaid with two metal support pieces; Copper polar ear comprises that two ends stretch out the outer copper side plate and the copper transverse slat of pushing down a metal support piece and being connected with an end of two blocks of copper side plates of a side of fixed frame.
3. electric car power supply module according to claim 2, it is characterized in that: an end of described metal support piece is provided with arcwall face.
4. according to claim 2 or 3 described electric car power supply modules, it is characterized in that: described bus-bar comprises aluminium flake and copper sheet; One end of aluminium flake is provided with several grooves along thickness direction; One end of copper sheet is provided with the projection of several and groove coupling along thickness direction; Projection inserts in the groove and solid-state diffusion connects; An aluminium transverse slat and a metal support piece laser welding of the aluminium flake of a bus-bar and a positive battery unit, a copper transverse slat and a metal support piece laser welding of the negative battery unit that copper sheet and are adjacent.
5. electric car power supply module according to claim 4, it is characterized in that: the shape of cross section of described groove is triangle; The shape of cross section of projection is triangle.
6. according to claim 1 or 2 or 3 described electric car power supply modules, it is characterized in that: an end face of described fixed frame is provided with several alignment pins; The other end of fixed frame is provided with several location holes with the alignment pin coupling; The alignment pin of a fixed frame inserts in the location hole of another adjacent fixed frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201105088U CN203165971U (en) | 2013-03-12 | 2013-03-12 | Power supply module of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201105088U CN203165971U (en) | 2013-03-12 | 2013-03-12 | Power supply module of electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203165971U true CN203165971U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201105088U Expired - Fee Related CN203165971U (en) | 2013-03-12 | 2013-03-12 | Power supply module of electric car |
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| CN (1) | CN203165971U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051682A (en) * | 2013-03-12 | 2014-09-17 | 万向电动汽车有限公司 | Power supply module of electrical vehicle and connection method |
| CN105449145A (en) * | 2014-09-26 | 2016-03-30 | 中信国安盟固利动力科技有限公司 | Tab laser welding structure of lithium ion battery |
| CN105489820A (en) * | 2015-12-01 | 2016-04-13 | 浙江超威创元实业有限公司 | Packaging structure and packaging method for power battery |
| WO2021052005A1 (en) * | 2019-09-20 | 2021-03-25 | 宁德时代新能源科技股份有限公司 | Battery module, battery pack and vehicle |
-
2013
- 2013-03-12 CN CN2013201105088U patent/CN203165971U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051682A (en) * | 2013-03-12 | 2014-09-17 | 万向电动汽车有限公司 | Power supply module of electrical vehicle and connection method |
| CN104051682B (en) * | 2013-03-12 | 2017-02-22 | 万向电动汽车有限公司 | Power supply module of electrical vehicle and connection method |
| CN105449145A (en) * | 2014-09-26 | 2016-03-30 | 中信国安盟固利动力科技有限公司 | Tab laser welding structure of lithium ion battery |
| CN105449145B (en) * | 2014-09-26 | 2018-05-29 | 中信国安盟固利动力科技有限公司 | A kind of lug laser welding structure of lithium ion battery |
| CN105489820A (en) * | 2015-12-01 | 2016-04-13 | 浙江超威创元实业有限公司 | Packaging structure and packaging method for power battery |
| WO2021052005A1 (en) * | 2019-09-20 | 2021-03-25 | 宁德时代新能源科技股份有限公司 | Battery module, battery pack and vehicle |
| US11811083B2 (en) | 2019-09-20 | 2023-11-07 | Contemporary Amperex Technology Co., Limited | Battery module, battery pack and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20200312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |