CN110400899A - Battery bus, battery and power supply unit - Google Patents
Battery bus, battery and power supply unit Download PDFInfo
- Publication number
- CN110400899A CN110400899A CN201910806718.2A CN201910806718A CN110400899A CN 110400899 A CN110400899 A CN 110400899A CN 201910806718 A CN201910806718 A CN 201910806718A CN 110400899 A CN110400899 A CN 110400899A
- Authority
- CN
- China
- Prior art keywords
- busbar connector
- battery
- guide pin
- lower layer
- metal guide
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000011148 porous material Substances 0.000 claims abstract description 51
- 238000003466 welding Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims description 28
- 239000004411 aluminium Substances 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 83
- 238000000034 method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 241001442589 Convoluta Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
This application provides a kind of battery bus, battery and power supply units.Battery bus includes: upper layer busbar connector, and upper layer busbar connector offers elongated pore；Lower layer's busbar connector, lower layer's busbar connector include lower layer's busbar connector ontology, matching hole and metal guide pin, and matching hole is provided on lower layer's busbar connector ontology, and metal guide pin is arranged in pairs in the two sides of matching hole length direction and forms guide channel；Matching hole and elongated pore are correspondingly arranged, and metal guide pin is arranged in elongated pore.Battery includes battery bus and multiple battery units, and battery unit includes battery body and the positive pole ear being electrically connected with battery body and negative lug, and positive pole ear and negative lug extend through corresponding guide channel and be electrically connected with metal guide pin.Power supply unit, including battery.Battery bus provided by the present application, difficulty of processing is small, at low cost, is not necessarily to secondary welding and mounting bracket, reduces tab welding occupied space, reduces battery modules weight, promotes energy density.
Description
Technical field
This application involves field of batteries more particularly to a kind of battery bus, battery and power supply unit.
Background technique
It can reach multiple polymerizations using busbar connector as electric current transmitting medium in being electrically connected to each other of multiple batteries
Being electrically connected to each other for object secondary cell need to realize by way of being welded between battery pole ear and baffle, tab that
This electrical connection is the link of most critical in battery modules process, and the core index of the processing link is low material cost, low
Processing cost, low assembly difficulty, high processing efficiency, process stabilizing, processing procedure are reliable.
Since non-porous busbar connector needs are welded twice, the volume and higher cost of entire mould group are increased, so mesh
The preceding method there are also using porous busbar connector.This kind of mode needs to be stamped or cut out multiple long and narrow hole slots on the busbar and needs
The tab to be penetrated corresponds to each other, and general hole groove width is 1.5~2.5 times of tab thickness, if groove width is smaller, punching press
Or to cut hole slot difficulty of processing bigger；If increasing groove width, although reducing busbar connector difficulty of processing and assembly difficulty, weldering
Laser beam may assemble gap by hole slot and tab and be irradiated on battery when connecing, and lead to security risk；When welding simultaneously
Molten metal can flow to the busbar connector back side by biggish hole slot gap, cause failure welding and current-carrying capability not to be able to satisfy and set
Meter requires, and the metal of molten condition is it is also possible to dropping onto leads to security risk in battery core.
In view of this, special propose the application.
Summary of the invention
The purpose of the present invention is to provide a kind of battery bus, battery and power supply units, to solve the above technical problems.
In order to achieve the above object, the present invention the following technical scheme is adopted:
A kind of battery bus, comprising:
Upper layer busbar connector, the upper layer busbar connector offer elongated pore；
Lower layer's busbar connector, lower layer's busbar connector include lower layer's busbar connector ontology, matching hole and metal guide pin, described to match
It closes hole to be provided on lower layer's busbar connector ontology, the metal guide pin is arranged in pairs in the two sides of the matching hole length direction simultaneously
Form guide channel；
The matching hole and the elongated pore are correspondingly arranged, and the metal guide pin is arranged in the elongated pore.
Elongated pore is processed on busbar connector by busbar connector thickness effect, thickness is bigger, and difficulty of processing is bigger, and busbar connector overcurrent
Capability Requirement busbar connector must have certain thickness, and busbar connector is divided into two layers by the present invention, can reduce busbar connector difficulty of processing, drop
Low manufacturing cost；In addition, the setting of upper layer busbar connector, lower layer's busbar connector and metal guide pin, so that not needed in process
Tab secondary welding is carried out, switching aluminium block is cancelled and the bracket of aluminium block is installed, tab welding occupied space can be reduced, reduce battery
Mould group weight.
Preferably, the elongated pore offers multiple；Preferably, multiple elongated pores are arranged side by side.
Multiple elongated pores can connect more battery units；Multiple elongated pores are arranged side by side, and can preferably configure electricity
Pool unit reduces the volume of battery entirety.
It is further preferred that the centre distance of two adjacent elongated pores is 6-12mm.
Optimize the distance of two adjacent elongated pores, the structure of battery unit can be optimized, guarantees that tab and busbar connector connect
The stability of binding structure.
Optionally, the centre distance of two adjacent elongated pores can for 6mm, 7mm, 8mm, 9mm, 10mm, 11mm,
Any value between 12mm and 6-12mm.
Preferably, the width of the elongated pore is 1.0-1.5mm.
The width of elongated pore is matched with the thickness of the thickness of metal guide pin, tab, is guaranteed reasonable gap, was both facilitated
Assembly again be conducive to promoted welding operating efficiency, the fraction defective of welding can be effectively reduced, thus production link as far as possible
It eliminates safe hidden trouble.
Optionally, the width of the elongated pore can for 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm and
Any value between 1.0-1.5mm.
Preferably, the angle between the metal guide pin and lower layer's busbar connector ontology is obtuse angle, the elongated pore
Side wall and the metal guide pin along its length between angle be acute angle.
Angle between metal guide pin and lower layer's busbar connector ontology is set as obtuse angle, so that between two metal guide pins
Up-narrow and down-wide guide channel is formed, the assembly of tab and busbar connector is conducive to；The side wall and gold along its length of elongated pore
The angle belonged between guide pin is set as acute angle, so that being formed between metal guide pin and the side wall along its length of elongated pore
Fit-up gap, tab strut metal guide pin when assembling upwards from below, welding light beam will not be irradiated to through busbar connector gap
On battery, welding risk is reduced, vertical welding may be implemented；Vertical welding relative to the welding for having tilt angle, welding parameter,
The requirement of welding position and precision controlling is all relatively low, can further reduce failure welding and security risk, further drops
Low production cost.
Preferably, the metal guide pin is wholely set with lower layer's busbar connector ontology.
Metal guide pin on lower layer's busbar connector is stamped and formed out by sheet metal, and manufacturing cost is lower.
It is further preferred that the junction of the metal guide pin and lower layer's busbar connector ontology forms the first fillet,
The junction of the lower surface of the side wall of the elongated pore along its length and the upper layer busbar connector forms the second fillet, and described the
One fillet and second fillet overlap.
Round corner treatment is carried out to junction, metal guide pin and upper layer busbar connector fitness can be made higher, the later period
It is not susceptible to rigid collision in assembling process, reduces security risk.
Preferably, the one end of the metal guide pin far from lower layer's busbar connector ontology and the upper layer busbar connector is upper
Flush.
One end by metal guide pin far from lower layer's busbar connector ontology is concordant with the upper surface of upper layer busbar connector to be arranged, favorably
The neat of secondary cell entirety is assembled and guaranteed in the later period.
It is further preferred that the lower surface of the upper layer busbar connector is bonded with the upper surface of lower layer's busbar connector ontology.
Preferably, the upper layer busbar connector and lower layer's busbar connector weld.
Upper and lower level busbar connector is bonded, becomes an entirety especially by the mode of welding, it is ensured that structure
Stability, promote the performance of battery.Welding manner includes but is not limited to the modes such as Laser Welding, ultrasonic bond, thermocompression bonding.
Preferably, the material of the upper layer busbar connector and lower layer's busbar connector is identical or different.
The selection of the material of upper layer busbar connector and lower layer's busbar connector, can match different processing needs, comprehensively consider and add
The factors such as work difficulty and electric conductivity are selected.
It is further preferred that the material of the upper layer busbar connector is aluminium, the material of lower layer's busbar connector is copper.
For aluminium, the difficulty of processing of copper is relatively large, and general thickness is lesser to use copper.
Preferably, the surface of the upper layer busbar connector, lower layer's busbar connector ontology and the metal guide pin is respectively provided with
There is coating.
It is further preferred that the material of the coating is nickel or tin.
According to the needs of product, upper layer busbar connector, lower layer's busbar connector ontology, metal guide pin can be carried out at surface
Reason generally uses tin plating or nickel plating.
Optionally, the upper layer busbar connector with a thickness of 1.0-2.5mm, lower layer's busbar connector ontology with a thickness of 0.2-
0.5mm。
The selection of the thickness of busbar connector, mainly consider difficulty of processing, cost, connective stability, elongated pore width etc. because
Element.By the preferred of the thickness to upper layer, lower layer's busbar connector, technology difficulty decline, cost decline can be made, performance is more preferable.
Optionally, the thickness of the upper layer busbar connector can be 1.0mm, 1.5mm, 2.0mm, 2.5mm and 1.0-2.5mm
Between any value, the thickness of lower layer's busbar connector ontology can be 0.2mm, 0.3mm, 0.4mm, 0.5mm and 0.2-
Any value between 0.5mm.
A kind of battery, including the battery bus and multiple battery units, the battery unit includes battery body
And the tab being electrically connected with the battery body, the tab are electrically connected through the guide channel and with the metal guide pin
It connects.
The battery manufactured using battery bus provided by the present application is reduced battery modules weight, promotes battery mould
Group energy density.
Preferably, the tab is provided with sequentially connected first straight line, bending section and second straight line, and described first
Straight line portion is electrically connected through the guide channel and with the metal guide pin, the second straight line and battery body electricity
Connection.
Bending section is used to absorb mould group vibrational energy and the expansion of mould group, shrinkage stress, and has the limit of tab extension elongation
Function, tab bending part and busbar connector guide frame matched design.
It is further preferred that the bending section is inverted U shape.
Inverted U-shaped design can preferably cooperate with metal guide pin.
Optionally, the tab includes positive pole ear and negative lug, the material of the positive pole ear and the negative lug
Matter is identical as the material of the corresponding metal guide pin.
The welding yield and welding quality of material of the same race are substantially better than dissimilar material welding, to reduce fraction defective, are promoted
Process capability and serious forgiveness.
A kind of power supply unit, including the battery.
Compared with prior art, the beneficial effect comprise that
1. separate machined can reduce difficulty of processing by setting upper layer and lower layer for busbar connector, manufacturing cost is reduced；No
It needs to carry out tab secondary welding, cancel switching aluminium block and the bracket of aluminium block is installed, tab welding occupied space can be reduced, reduced
Battery modules weight promotes battery modules energy density；Metal guide pin is set, and assembly efficiency is higher, safer；
It is small in size, energy density is high, security performance 2. the battery manufactured using battery bus provided by the present application
It is good.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the structural schematic diagram of the battery bus of embodiment offer；
Fig. 2 shows the longitudinal sectional drawings for the battery bus that embodiment provides；
Fig. 3 shows the structural schematic diagram of the battery of embodiment offer；
Fig. 4 shows the structural schematic diagram of another battery of embodiment offer；
Fig. 5 shows the structural schematic diagram of the battery unit of embodiment offer.
Main element symbol description:
The upper layer 1- busbar connector；10- elongated pore；
2- lower layer busbar connector；20- lower layer busbar connector ontology；21- matching hole；22- metal guide pin；23- guide channel；
3- battery body；
4- tab；40- first straight line；The bending section 41-；42- second straight line.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in this application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Embodiment 1
Please refer to Fig. 1 and Fig. 2, a kind of battery bus, comprising: the upper layer busbar connector 1 of aluminium material and the lower layer of copper material
Busbar connector 2, upper layer busbar connector 1 with a thickness of 1.0mm；Upper layer busbar connector 1 offers that 8 arranged side by side, width is 1.0mm's
Elongated pore 10, lower layer's busbar connector 2 include lower layer's busbar connector ontology 20, matching hole 21 and metal guide pin 22, and matching hole 21 opens up
On lower layer's busbar connector ontology 20, metal guide pin 22 is arranged in pairs in the two sides of 21 length direction of matching hole；21 He of matching hole
Elongated pore 10 is correspondingly arranged, metal guide pin 22 be arranged in elongated pore 10, lower layer's busbar connector ontology 20 with a thickness of 0.5mm.
In order to guarantee that the fitness of busbar connector and battery core reaches most preferably, the centre distance of two adjacent elongated pores 10 is
6mm.It should be noted that centre distance herein refer to two long sides of two adjacent elongated pores 10, side by side in
The distance between heart point.
In order to guarantee the smooth of tab and busbar connector assembling process, in a preferred embodiment, metal is oriented to
The angle that piece 22 is arranged between lower layer busbar connector ontology 20 is obtuse angle, so that being formed between the metal guide pin being arranged in pairs
Up-narrow and down-wide guide channel 23；Angle between the side wall and metal guide pin 22 along its length of elongated pore 10 is sharp
Angle, so that forming gap between the side wall and metal guide pin 22 of elongated pore 10 along its length；The two cooperation, so that assembling
Metal guide pin 22 is strutted when tab assembles upwards from below in journey, welding light beam will not be irradiated to battery through busbar connector gap
On, welding risk is reduced, vertical welding may be implemented；Vertical welding is relative to the welding for having tilt angle, welding parameter, welding
The requirement of position and precision controlling is all relatively low, can further reduce failure welding and security risk, further decrease life
Produce cost.
The considerations of for processing cost and efficiency, preferably obtains matching hole 21 by impact style, so that metal guide pin
22 and lower layer's busbar connector ontology 20 be integrally formed.
Referring to Fig. 3, a kind of battery, including above-mentioned battery bus and multiple battery units, battery unit includes electricity
Pond ontology 3 and the tab 4 being electrically connected with battery body 3, tab 4 are electrically connected through guide channel 23 and with metal guide pin 22
It connects.
Embodiment 2
Referring to Fig. 2, a kind of battery bus, comprising: the upper layer busbar connector 1 of copper material and lower layer's busbar connector of copper material
2, upper layer busbar connector 1 with a thickness of 2.5mm；Upper layer busbar connector 1 offers 3 elongated pores arranged side by side, width is 2.5mm
10, the centre distance of two adjacent elongated pores 10 is 12mm；Lower layer's busbar connector 2 includes lower layer's busbar connector ontology 20, matching hole
21 and metal guide pin 22, matching hole 21 be provided on lower layer's busbar connector ontology 20, metal guide pin 22 is arranged in pairs in cooperation
The two sides of 21 length direction of hole；Matching hole 21 and elongated pore 10 are correspondingly arranged, and metal guide pin 22 is arranged in elongated pore 10, under
Layer busbar connector ontology 20 with a thickness of 0.2mm.
Angle between metal guide pin 22 and lower layer's busbar connector ontology 20 is obtuse angle, so that the metal guiding being arranged in pairs
Up-narrow and down-wide guide channel 23 is formed between piece；Between the side wall and metal guide pin 22 along its length of elongated pore 10
Angle is acute angle, so that forming gap between the side wall and metal guide pin 22 of elongated pore 10 along its length.
Rigid collision occurs in assembling process and use process in order to reduce, improves the consistency and assembling structure of assembly
Stability, the junction of metal guide pin 22 and lower layer's busbar connector ontology 20 forms the first fillet 24, elongated pore 10 along length
The junction for spending the side wall in direction and the lower surface of upper layer busbar connector 1 forms the second fillet 11, the first fillet 24 and the second fillet
11 cooperations.
In a preferred embodiment, the neat degree between the overall stability and components in order to guarantee assembly,
The one end of metal guide pin 22 far from lower layer's busbar connector ontology 20 is concordant with the upper surface of upper layer busbar connector 1.
In order to avoid instability problem occurs in welding, guarantee the security performance of battery, preferably by the following table of upper layer busbar connector 1
Face is bonded with the upper surface of lower layer busbar connector ontology 20.Upper layer busbar connector 1 can be formed whole with lower layer busbar connector 2 by welding
Body.In other optional embodiments, it also can choose the modes such as clamping, riveting, bonding and be attached.
Please refer to Fig. 4 and Fig. 5, a kind of battery, including above-mentioned battery bus and multiple battery units, battery unit packet
Battery body 3 and the tab being electrically connected with battery body 34 are included, tab 4 is through guide channel 23 and electric with metal guide pin 22
Connection.
Tab 4 is provided with sequentially connected first straight line 40, bending section 41 and second straight line 42, first straight line 40
It is electrically connected through guide channel 23 and with metal guide pin 22, second straight line 42 is electrically connected with battery body 3.
In order to just absorption mould group vibrational energy and mould group expansion, cope with shrinkage stress, limit tab extension elongation, it is curved
Pars convoluta 41 is arranged to inverted U-shaped.
When assembly, first by the elongated pore 10 of the corresponding insertion upper layer busbar connector 1 of the metal guide pin 22 of lower layer's busbar connector 2
It is interior, so that upper layer busbar connector 1 and lower layer's busbar connector 2 fit together, it is then that the first straight line 40 of tab 4 is logical along guiding
Road 23 passes through lower layer's busbar connector 2 and upper layer busbar connector 1, and makes the head end of first straight line 40 beyond the upper of upper layer busbar connector 1
Surface reaches welding position.Then tab 4 and battery bus are linked together using the method for laser welding.
Embodiment 3
Difference from Example 2 is, upper layer busbar connector 1 with a thickness of 2.0mm, the thickness of lower layer's busbar connector ontology 20
For 0.3mm, the width of elongated pore 10 is 1.2mm, and the centre distance of two neighboring elongated pore 10 is 10mm.
In addition, improve its electric conductivity to improve the service life of battery bus, busbar connector 1, lower layer's busbar connector on upper layer
The surface setting coating of ontology 20, metal guide pin 22, such as nickel coating or tin coating.
In order to guarantee to weld yield and welding quality, the material of positive pole ear and negative lug is oriented to corresponding metal
The material of piece 22 is identical.For example, positive pole ear is aluminium material, then its corresponding metal guide pin 22 selects aluminium material；Cathode
Tab is copper material, then its corresponding metal guide pin selects copper material.
Using battery bus provided by the present application, can be welded using continuous wave laser+swing plumb joint, it should
Kind welding manner can be compatible with bigger rigging error and positioning accuracy error, irradiate tab 4 and elongated pore repeatedly by light
Gap is formed between 10 side wall and metal guide pin 22 along its length, forms weldering after molten metal or metal mixture cooling
Seam, welding effective coverage are greater than the scheme of the prior art, and welding pulling force, weld width, molten bath area are superior to the prior art.
Battery bus difficulty of processing provided by the present application is low, at low cost, the battery obtained using its processing, small in size,
It is light-weight, energy density is high.
Stringent to the thickness requirement of busbar connector using the direct jet-bedding of single layer busbar connector under the prior art, busbar connector is thicker, needs
The slot to be processed is narrower, then bigger to the abrasion and destruction of punching tool when punching press, processing cost is very high；It is provided using the application
Battery bus, busbar connector is divided into two, reduce busbar connector processing when thickness, the use of punching tool can be effectively improved
Service life reduces processing cost；Using 10000 busbar connectors with 8 elongated pores 10 as sample, remittance provided by the present application is not used
The monolithic cost Da Dao $16.8 member that stream row's structure is directly processed, is substantially dropped using the battery bus cost of the offer of the application
Low is $6.8 member.Obtained battery is processed using it, do not need to carry out tab secondary welding, cancel switching aluminium block and installation aluminium
Speed of production can be promoted to 16 battery core/minutes, the aluminium of the prior art by 10 battery core/minutes in production by the bracket of block
Block and its mounting bracket at least need to occupy the space 20mm, busbar connector the space occupied provided by the present application in battery core length direction
It can reduce to 10mm, half occupied space can be saved；And the cancellation of aluminium block and its mounting bracket means the reduction of weight, with 12
It goes here and there for mould group, the mould group total weight of prior art is 10.3kg, can be reduced about using busbar connector provided by the present application
0.6kg weight, it is corresponding to promote battery modules energy density 5.8% or so.
Battery provided by the present application production is become into power supply unit, it is safe and stable, efficient.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of battery bus characterized by comprising
Upper layer busbar connector, the upper layer busbar connector offer elongated pore；
Lower layer's busbar connector, lower layer's busbar connector include lower layer's busbar connector ontology, matching hole and metal guide pin, the matching hole
It is provided on lower layer's busbar connector ontology, the metal guide pin is arranged in pairs in the two sides of the matching hole length direction and formation
Guide channel；
The matching hole and the elongated pore are correspondingly arranged, and the metal guide pin is arranged in the elongated pore.
2. battery bus according to claim 1, which is characterized in that the elongated pore offers multiple；Preferably, more
A elongated pore is arranged side by side；Preferably, the centre distance of two adjacent elongated pores is 6-12mm；Preferably, institute
The width for stating elongated pore is 1.0-1.5mm.
3. battery bus according to claim 1, which is characterized in that the metal guide pin and lower layer's busbar connector
Angle between ontology is obtuse angle, and the angle between the side wall and the metal guide pin along its length of the elongated pore is
Acute angle；Preferably, the metal guide pin is wholely set with lower layer's busbar connector ontology；Preferably, the metal guide pin
The first fillet, the side wall of the elongated pore along its length and the upper layer are formed with the junction of lower layer's busbar connector ontology
The junction of the lower surface of busbar connector forms the second fillet, and first fillet and second fillet overlap.
4. battery bus according to claim 1, which is characterized in that the metal guide pin converges far from the lower layer
The one end for arranging ontology is concordant with the upper surface of the upper layer busbar connector；Preferably, the lower surface of the upper layer busbar connector with it is described
The upper surface of lower layer's busbar connector ontology is bonded.
5. battery bus according to claim 1, which is characterized in that the upper layer busbar connector and lower layer's busbar connector
Welding；Preferably, the material of the upper layer busbar connector and lower layer's busbar connector is identical or different；Preferably, the upper layer is converged
The material of stream row is aluminium, and the material of lower layer's busbar connector is copper.
6. battery bus according to claim 1, which is characterized in that the upper layer busbar connector, lower layer's busbar connector
The surface of ontology and the metal guide pin is provided with coating；Preferably, the material of the coating is nickel or tin.
7. battery bus according to claim 1-6, which is characterized in that the upper layer busbar connector with a thickness of
1.0-2.5mm, lower layer's busbar connector ontology with a thickness of 0.2-0.5mm.
8. a kind of battery, which is characterized in that including the described in any item battery bus of claim 1-7 and multiple battery lists
Member, the battery unit include battery body and the tab that is electrically connected with the battery body, and the tab is led through described
It is electrically connected to channel and with the metal guide pin.
9. battery according to claim 8, which is characterized in that the tab be provided with sequentially connected first straight line,
Bending section and second straight line, the first straight line is through the guide channel and is electrically connected with the metal guide pin, institute
Second straight line is stated to be electrically connected with the battery body；Preferably, the bending section is inverted U shape；Preferably, the tab includes
The material of positive pole ear and negative lug, the positive pole ear and the negative lug and the corresponding metal guide pin
Material is identical.
10. a kind of power supply unit, which is characterized in that including battery described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806718.2A CN110400899A (en) | 2019-08-29 | 2019-08-29 | Battery bus, battery and power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806718.2A CN110400899A (en) | 2019-08-29 | 2019-08-29 | Battery bus, battery and power supply unit |
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| CN110400899A true CN110400899A (en) | 2019-11-01 |
Family
ID=68329470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910806718.2A Pending CN110400899A (en) | 2019-08-29 | 2019-08-29 | Battery bus, battery and power supply unit |
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| CN (1) | CN110400899A (en) |
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| CN112382830A (en) * | 2020-08-03 | 2021-02-19 | 万向一二三股份公司 | Method for effectively preventing foil tab of soft package battery from being broken |
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