CN209329024U - Battery modules - Google Patents
Battery modules Download PDFInfo
- Publication number
- CN209329024U CN209329024U CN201920147139.7U CN201920147139U CN209329024U CN 209329024 U CN209329024 U CN 209329024U CN 201920147139 U CN201920147139 U CN 201920147139U CN 209329024 U CN209329024 U CN 209329024U
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- electrode lead
- group
- tie point
- battery unit
- battery
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- 230000005611 electricity Effects 0.000 claims description 18
- 239000004020 conductor Substances 0.000 abstract description 46
- 238000003466 welding Methods 0.000 description 48
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 14
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007306 turnover 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
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- 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
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- 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)
- Battery Mounting, Suspending (AREA)
Abstract
Disclose a kind of battery modules, battery modules include the first battery unit and the second battery unit, first battery unit and the second battery unit respectively include N number of secondary cell, N is the integer more than or equal to 2, each secondary cell includes opposite polarity first electrode lead and second electrode lead, and the fusing point of first electrode lead is different from the fusing point of second electrode lead；Wherein, battery modules have first group of tie point, second group of tie point, N number of first electrode lead of first battery unit is electrically connected by first group of tie point, and N number of second electrode lead of the second battery unit is electrically connected by second group of tie point, first group of tie point and second group of tie point mutual dislocation.Every group of tie point only connects the contact conductor of same fusing point in the battery modules of the utility model embodiment, improves the connection reliability of the contact conductor of the weld strength and battery modules at each group tie point.
Description
Technical field
The utility model relates to field of batteries, and in particular to a kind of battery modules.
Background technique
U-shaped connection sheet is generallyd use between existing secondary cell to be electrically connected to each other, in the actual operation process, U-shaped company
After the completion of the contact conductor welding of the side of contact pin and corresponding secondary cell, the other side with the electricity of corresponding secondary cell
When pole lead is welded, previous welding region is inherently pullled in the vibration of ultrasonic wave, influences weld strength, and then influence electricity
Chi Mo group uses safe and service life.
It, need in order to avoid the influence that first time is welded in second of welding of secondary welding, therefore using primary welding
The contact conductor to be electrically connected is folded into be welded together.Secondary cell includes first electrode lead and second electrode lead.
Since the voltage and current of single battery is smaller, it is often necessary to it is carried out in series and parallel, need at this time multiple first electrode leads and
Multiple second electrode leads, which stack gradually, to be attached.Since first electrode lead is different from the material of second electrode lead, weldering
When connecing, there is multiple and different welding layers, i.e. first electrode lead and first electrode lead welding layer, first electrode lead and the
Two contact conductor welding layers, second electrode lead and second electrode lead welding layer.When ultrasonic bonding, first electrode lead with
The welding of first electrode lead and second electrode lead are different from the temperature that second electrode lead welds, the high welding layer meeting of temperature
The low welding layer of temperature is influenced, when causing welding, Plastic Flow is excessive, forms cavitation problem, influences weld strength.
Utility model content
The utility model provides a kind of battery modules, improves the connection reliability of contact conductor in battery modules.
The utility model embodiment provides a kind of battery modules comprising the first battery unit and the second battery unit,
First battery unit and the second battery unit respectively include N number of secondary cell, and N is the integer more than or equal to 2, each secondary electricity
Pond includes opposite polarity first electrode lead and second electrode lead, fusing point and the second electrode lead of first electrode lead
Fusing point is different；Wherein, battery modules have first group of tie point, second group of tie point, and first group of tie point is by the first battery list
N number of second electrode lead of second battery unit is electrically connected by N number of first electrode lead electrical connection of member, second group of tie point,
First group of tie point and second group of tie point mutual dislocation；Battery modules further include electrical connector, and the first battery unit is at least
One first electrode lead is connect by electrical connector at least one second electrode lead of the second battery unit.
According to the one aspect of the utility model embodiment, first electrode lead, second electrode lead are along first direction
Extending, first electrode lead includes first connecting portion, and second electrode lead includes second connecting portion, and the first of the first battery unit
The mutually evacuation setting in a second direction of the second connecting portion of interconnecting piece and the second battery unit, second direction and first direction phase
It hands over, the first connecting portion of N number of first electrode lead of the first battery unit is connect by first group of tie point with electrical connector, and second
The second connecting portion of N number of second electrode lead of second battery unit is connect by group tie point with electrical connector.
According to the one aspect of the utility model embodiment, first electrode lead, second electrode lead are sheet lead,
The second electrode lead of the first electrode lead of first battery unit and the second battery unit mutual dislocation in a second direction.
According to the one aspect of the utility model embodiment, each secondary cell further includes battery main body, and first electrode is drawn
Line is provided with the first root, and the first root connection battery main body and first connecting portion, second electrode lead are provided with the second root,
Second root connects battery main body and second connecting portion, wherein in a second direction, the size of first connecting portion is less than first
The size in portion, the size of the size of second connecting portion less than the second root.
According to the one aspect of the utility model embodiment, in a second direction, the size of first connecting portion is less than first
The half of root size, and/or, in a second direction, the half of the size of second connecting portion less than the second root size.
According to the one aspect of the utility model embodiment, according to the one aspect of the utility model embodiment, electrical connection
Part is provided with the electrical connection section of sheet, and electrical connection section includes the first electrical connection area arranged in a second direction and the second electrical connection
N number of first electrode lead is connect by area, first group of tie point with the first electrical connection area, and second group of tie point is by N number of second electrode
Lead is connect with the second electrical connection area.
According to the one aspect of the utility model embodiment, the first electrical connection area is electrically connected between area with second to be offered out
Slot.
According to the one aspect of the utility model embodiment, the size slotted in a second direction is more than or equal to 0.1 millimeter.
According to the one aspect of the utility model embodiment, electrical connector is additionally provided with support portion, support portion and electrical connection section
Connection and opposite electrical connection section bending, slot and extend in support portion, and form rounded structure in support portion.
According to the one aspect of the utility model embodiment, the thickness of electrical connection section is greater than the thickness of first electrode lead；
And the thickness of electrical connection section is greater than the thickness of second electrode lead.
According to the battery modules of the utility model embodiment, the fusing point of first electrode lead and the fusing point of second electrode lead
Difference, battery modules have first group of tie point for connecting N number of first electrode lead, connect the second of N number of second electrode lead
Group tie point, first group of tie point and second group of tie point mutual dislocation, so that every group of tie point only connects the electricity of same fusing point
Pole lead, when avoiding tie point while connecting fusing point Different electrodes lead, for meet welding high-melting-point contact conductor when welding
Influence of the temperature to the welding surface for including low melting point contact conductor, to improve the weld strength and battery at each group tie point
The connection reliability of the contact conductor of mould group.
In some alternative embodiments, there is the electrical connector that battery modules include the first electrical connection area and second to be electrically connected
Area is met, the first electrical connection area is connect with N number of first electrode lead, and the second electrical connection area is connect with N number of second electrode lead.Its
In, the first electrical connection area is electrically connected between area with second offers fluting, to prevent weldering when welding at the first electrical connection area
The welding process that termination process is electrically connected at area with second mutually vibrates influence, improves welding quality.
Detailed description of the invention
By reading detailed description of non-limiting embodiments referring to the drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon, wherein the same or similar appended drawing reference indicates the same or similar feature.
Fig. 1 shows the stereoscopic schematic diagram of the battery modules of the utility model embodiment；
Fig. 2 shows the stereogram exploded views of the battery modules of the utility model embodiment；
Fig. 3 a shows a kind of stereoscopic schematic diagram of contact conductor connection structure of the utility model embodiment；
Fig. 3 b shows a kind of stereogram exploded view of contact conductor connection structure of the utility model embodiment；
Fig. 4 shows the stereoscopic schematic diagram of the electrical connector of the utility model embodiment；
Fig. 5 shows the stereogram exploded view of another contact conductor connection structure of the utility model embodiment；
Fig. 6 shows the stereogram exploded view of another contact conductor connection structure of the utility model embodiment.
In figure:
The first battery unit of G1-；The second battery unit of G2-；
First group of tie point of P1-；Second group of tie point of P2-；
X- first direction；Y- second direction；
100- secondary cell；
110- battery main body；
121- first electrode lead；121a- first connecting portion；The first root 121b-；
122- second electrode lead；122a- second connecting portion；The second root 122b-；
200- electrical connector；
210- electrical connection section；211- first is electrically connected area；212- second is electrically connected area；
220- support portion；
230- fluting；
240- rounded structure.
Specific embodiment
The feature and exemplary embodiment of the various aspects of the utility model is described more fully below, in order to keep this practical new
The objects, technical solutions and advantages of type are more clearly understood, and below in conjunction with drawings and the specific embodiments, carry out to the utility model
It is described in further detail.It should be understood that specific embodiment described herein is only configured to explain the utility model, do not matched
It is set to restriction the utility model.To those skilled in the art, the utility model can not need these details
In some details in the case where implement.Below the description of embodiment is used for the purpose of passing through the example for showing the utility model
The utility model is better understood to provide.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
It should be appreciated that being known as being located at another floor, another area when by a floor, a region when describing the structure of component
When domain " above " or " top ", can refer to above another layer, another region, or its with another layer, it is another
Also comprising other layers or region between a region.Also, if by part turnover, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".
The utility model embodiment provides a kind of battery modules, and the electricity of the utility model embodiment is shown respectively in Fig. 1, Fig. 2
The stereoscopic schematic diagram of Chi Mo group, stereogram exploded view.The battery modules include the first battery unit G1 and the second battery unit G2,
First battery unit G1 and the second battery unit G2 respectively includes N number of secondary cell 100, and N is the integer more than or equal to 2, often
A secondary cell 100 includes opposite polarity first electrode lead 121 and second electrode lead 122, first electrode lead 121
Fusing point is different from the fusing point of second electrode lead 122.In the present embodiment, secondary cell 100 can be pouch-shaped secondary battery.
Two secondary cells 100, each second battery unit G2 are included with each first battery unit G1 in the present embodiment
Also including being illustrated for two secondary cells 100, between two secondary cells 100 that each first battery unit G1 includes
It is parallel with one another, it is parallel with one another between two secondary cells 100 that each second battery unit G2 includes, the first battery unit G1 with
It is connected in series between second battery unit G2.It is understood that in some other embodiment, according to battery modules
Design needs, and each first battery unit G1 includes that the quantity of secondary cell 100 can be other numbers such as three, four, together
Managing the quantity that each second battery unit G2 includes secondary cell 100 can be other numbers such as three, four.
In addition, battery modules can only include the first battery unit G1 and the second battery unit G2 being connected in series, it can also
Being repeated in a thickness direction using the first battery unit G1 of series connection and the second battery unit G2 as repetitive unit
It stacks and connects to be formed, can also include other battery units in some other embodiment.
It should be noted that term " fusing point of first electrode lead 121 " herein, " second electrode lead 122 it is molten
Point ", specifically can be understood as the fusing point of 121 surfacing of first electrode lead, 122 surfacing of second electrode lead it is molten
Point.For example, in some embodiments, the second motor down-lead 122 is made of aluminum material, fusing point, that is, aluminium of second electrode lead 122
The fusing point of material；In some embodiments, first electrode lead 121 is that the plating nickel on surface of copper product is formed, then first electrode is drawn
Fusing point, that is, nickel material fusing point of line 121.
As described above, in some embodiments, first electrode lead 121 is made of copper product, and first electrode lead
121 surface has coating, e.g. nickel plating, to avoid sending out between the sealed plastic for including in copper contact conductor and battery
The phenomenon that raw accelerated ageing.When second electrode lead 122 is made for aluminum material, due to copper aluminium welding diffusion zone thickness about
20 microns, in some embodiments, it is micro- that the thickness of the coating (e.g. nickel layer) on 121 surface of first electrode lead is more than or equal to 20
Rice guarantees to weld consistent type and stability to guarantee that welding only has the diffusion of aluminium nickel.
As described above, N number of secondary cell of N number of secondary cell 100 of the first battery unit G1, the second battery unit G2
100 is in parallel respectively, is connected in series between the first battery unit G1 and the second battery unit G2.It specifically, can be by first
N number of second electrode lead 122 electrical connection of the N number of first electrode lead 121 and the second battery unit G2 of battery unit G1, below
The connection structure of contact conductor at this will be specifically described by numerous embodiments.
Fig. 3 a, Fig. 3 b be shown respectively a kind of contact conductor connection structure of the utility model embodiment stereoscopic schematic diagram,
Stereogram exploded view.Battery modules have first group of tie point P1, second group of tie point P2, wherein first group of tie point P1 is by the
N number of first electrode lead 121 of one battery unit G1 is electrically connected, and second group of tie point P2 is by N number of the of the second battery unit G2
The electrical connection of two contact conductors 122, first group of tie point P1 and second group of tie point P2 mutual dislocation.
It should be noted that in Fig. 3 a, Fig. 3 b illustrated embodiment, with first group of tie point P1 include a tie point,
Second group of tie point P2 also includes being illustrated for a tie point.However, in some other embodiment, first group of connection
The quantity for the tie point that point P1 includes can be other numerical value such as two, three.When the tie point that first group of tie point P1 includes
When quantity is more than two, it can be each tie point connection all N number of first electrode leads 121, be also possible to a connection
Point connection quantity is less than several first electrode leads 121 of correspondence of N, and more than two tie points draw N number of first electrode
Line 121 is electrically connected to each other.The setting of the setting of second group of tie point P2 and above-mentioned first group of tie point P1 similarly, and second group
The tie point quantity of tie point P2 can be identical with the tie point quantity of first group of tie point P1, can not also be identical.
The tie point that first group of tie point P1 above-mentioned, second group of tie point P2 include, can be in welding process and is formed
Tie point, wherein welding process can use ultrasonic bonding, make metalwork under certain static pressure in welding process, lead to
Crossing ultrasonic high-frequency vibration makes welding metal interface friction heat that it be caused moulding flowing occurs to be finally reached the atom range of stress to be formed
Metal bonding.
In the utility model embodiment, the fusing point of the first electrode lead 121 of each secondary cell 100 is greater than second electrode
The fusing point of lead 122, when the fusing point of first electrode lead 121 be greater than second electrode lead 122 between fusing point when, due to welding
When temperature (hereinafter referred to as welding temperature) when reaching Plastic Flow it is directly proportional to fusing point, therefore the weldering of first electrode lead 121
Jointing temp is greater than the welding temperature of second electrode lead 122, at this time first electrode lead 121 i.e. high-melting-point contact conductor, and second
Contact conductor 122 is low melting point contact conductor.
If the fusing point of high-melting-point contact conductor is denoted as T1, the fusing point of low melting point contact conductor is denoted as T2, as T1-T2 >
When 50%T2, biggish shadow can be caused to the welding stability of welding low melting point contact conductor when welding high-melting-point contact conductor
It rings.Specifically, when high-melting-point and high-melting-point contact conductor, low melting point and low melting point contact conductor weld simultaneously, high-melting-point electrode
The problems such as welding temperature of lead is high, and Plastic Flow is fast when low melting point contact conductor being caused to weld, and is easy to produce hole.
According to the battery modules of the utility model embodiment, first group of tie point P1 and second group of tie point P2 are mutually wrong
Position, so that every group of tie point only connects the contact conductor of same fusing point, avoids tie point while connecting fusing point Different electrodes and draw
When line, for meet weld high-melting-point contact conductor when welding temperature to include low melting point contact conductor welding surface influence, from
And it improves at first group of tie point P1, the connection of the contact conductor of the weld strength at second group of tie point P2 and battery modules
Reliability.
Battery modules further include electrical connector 200, and at least one first electrode lead 121 of the first battery unit G1 passes through
Electrical connector 200 is connect at least one second electrode lead 122 of the second battery unit G2, to realize above-mentioned contact conductor
N number of first electrode lead 121 and N number of second electrode lead 122 is electrically connected in connection structure.
In the present embodiment, first electrode lead 121, second electrode lead 122 extend along first direction X.First electricity
Pole lead 121 includes first connecting portion 121a, and second electrode lead 122 includes second connecting portion 122a.Wherein the first battery list
Mutually evacuation is set the second connecting portion 122a of the first connecting portion 121a of first G1 and the second battery unit G2 on second direction Y
It sets, second direction Y intersects with first direction X.In some embodiments, second direction Y is vertical with first direction X.
In the present embodiment, first group of tie point P1 is by the first of N number of first electrode lead 121 of the first battery unit G1
Interconnecting piece 121a is connect with electrical connector 200, and second group of tie point P2 is by N number of second electrode lead of the second battery unit G2
122 second connecting portion 122a is connect with electrical connector 200.
The second connecting portion 122a of the first connecting portion 121a of first battery unit G1 and the second battery unit G2 are second
Mutually evacuation setting on the Y of direction, so that first group of tie point P1, second group of tie point P2 are mutually avoided on second direction Y.The
One group of tie point P1, second group of tie point P2 can be respectively formed in welding more than twice.
It should be noted that passing through electrical connector 200 for N number of first electrode lead 121 and N number of second electrode lead 122
The mode of electrical connection can be not limited to aforesaid way.Part in some other embodiment, in N number of first electrode lead 121
The first electrode lead 121 of quantity (at least one) can be equipped with the first interconnection, which can lead to
The first interconnection is crossed to connect with electrical connector 200；Second of partial amt (at least one) in N number of second electrode lead 122
Contact conductor 122 can be equipped with the second interconnection, the partial second electrode lead 122 can by the second interconnection be electrically connected
Part 200 connects, to realize being electrically connected for N number of first electrode lead 121 and N number of second electrode lead 122.
It please also refer to Fig. 1 to Fig. 3 b, in some embodiments, each secondary cell 100 further includes battery main body 110.
First electrode lead 121 is provided with the first root 121b, the first root 121b connection battery main body 110 and first connecting portion
121a；Second electrode lead 122 is provided with the second root 122b, and the second root 122b connection battery main body 110 is connect with second
Portion 122a.
Wherein, on second direction Y, size of the size less than the first root 121b of first connecting portion 121a, second connects
Size of the size of socket part 122a less than the second root 122b.First connecting portion 121a, second connecting portion 122a can be respectively
It is obtained after cutting part structure on bar shaped, pellet electrode lead.On second direction Y, first of first electrode lead 121
Portion 121b is identical as the size of the second root 122b of second electrode lead 122, improves first electrode lead 121, second electrode
The manufacture uniformity of lead 122, furthermore relative to the larger-sized first root 121b of first connecting portion 121a, relative to second
The larger-sized second root 122b of interconnecting piece 122a can be used in improving heat dissipation performance.
Further in some embodiments, on second direction Y, the size of first connecting portion 121a is less than the first root
The half of 121b size, and/or, on second direction Y, the size of second connecting portion 122a is less than the second root 122b size
Half, to avoid the electricity of the first connecting portion 121a of first electrode lead 121 and second in above-mentioned contact conductor connection structure
The second connecting portion 122a of pole lead 122 overlaps.
Fig. 4 shows the stereoscopic schematic diagram of the electrical connector of the utility model embodiment, and electrical connector 200 is provided with sheet
Electrical connection section 210, in some embodiments, electrical connector 200 are additionally provided with support portion 220, support portion 220 and electrical connection section 210
Connection and the opposite bending of electrical connection section 210.
First electrical connection area 211 and second electrical connection area 212 of the electrical connection section 210 including the arrangement of Y in a second direction, first
N number of first electrode lead 121 can be connect by group tie point P1 with the first electrical connection area 211, and second group of tie point P2 can be by N
A second electrode lead 122 is connect with the second electrical connection area 212, to realize N number of first electrode lead 121 and N number of second electricity
The electrical connection of pole lead 122.
Wherein, the thickness of electrical connection section 210 is greater than the thickness of first electrode lead 121, and the thickness of electrical connection section 210 is big
In the thickness of second electrode lead 122, to protect first electrode lead 121, second electrode lead 122 to weld in the welding process
From cracking or damaging.
In the present embodiment, the first electrical connection area 211 is electrically connected between area 212 with second offers fluting 230, to prevent
The welding process that welding process when welding at the first electrical connection area 211 is electrically connected at area 212 with second mutually vibrates influence, mentions
High welding quality.
In some embodiments, size of the fluting 230 on second direction Y is more than or equal to 0.1 millimeter, thus by the first electricity
Welding process at bonding pad 211 is electrically connected the mutual vibration influence of the welding process at area 212 with second and is down to zone of reasonableness
It is interior, guarantee qualified welding quality.
In some embodiments, fluting 230 extends in support portion 220, and forms rounded structure 240 in support portion 220,
To reduce the fatigue cracking slotted at 230 caused by the high-frequency vibration when stress at 230 positions of fluting is concentrated to avoid welding.
It include two with each first battery unit G1 in the contact conductor connection structure shown in above-mentioned Fig. 3 a, Fig. 3 b
Secondary cell 100, each second battery unit G2 also include being illustrated for two secondary cells 100.It is understood that
It is that the secondary cell 100 that each first battery unit G1, each second battery unit G2 are respectively included is also possible to other numbers
Amount.
Fig. 5 shows the stereogram exploded view of another contact conductor connection structure of the utility model embodiment, which draws
Most of structure is roughly the same with the structure of previous embodiment in wire connection structure, is no longer described in detail.Wherein, not with previous embodiment
With in the battery modules of the present embodiment, each first battery unit G1 includes three secondary cells 100, each second electricity
Pool unit G2 also includes three secondary cells 100.
Parallel with one another, each second battery unit between three secondary cells 100 that each first battery unit G1 includes
It is parallel with one another between three secondary cells 100 that G2 includes, it is gone here and there between the first battery unit G1 and the second battery unit G2
Connection connection.
Battery modules have first group of tie point P1, second group of tie point P2, wherein first group of tie point P1 is electric by first
Three first electrode leads 121 of pool unit G1 are electrically connected, and second group of tie point P2 is by three second of the second battery unit G2
Contact conductor 122 is electrically connected, first group of tie point P1 and second group of tie point P2 mutual dislocation.
First electrode lead 121, second electrode lead 122 extend along first direction X.First electrode lead 121 includes
First connecting portion 121a, second electrode lead 122 include second connecting portion 122a.Wherein the first connection of the first battery unit G1
The second connecting portion 122a of portion 121a and the second battery unit G2 mutually evacuation setting, second direction Y and the on second direction Y
One direction X intersection.In some embodiments, second direction Y is vertical with first direction X.
Battery modules further include electrical connector 200, and in the present embodiment, first group of tie point P1 is by the first battery unit G1
The first connecting portion 121a of N number of first electrode lead 121 connect with electrical connector 200, second group of tie point P2 is by the second electricity
The second connecting portion 122a of N number of second electrode lead 122 of pool unit G2 is connect with electrical connector 200.
It is understood that the secondary cell that each first battery unit G1, each second battery unit G2 are respectively included
100 quantity can be not limited to two, three, can also be other quantity, can need to adjust according to the design of battery modules.
Therefore, 100 quantity of secondary cell that battery modules can according to the design needs to the first battery unit G1, the second battery unit G2
And contact conductor quantity is adjusted, and improves the flexibility of battery modules design.
More than two first electrode leads 121 that each first battery unit G1 includes pass through first group of tie point P1 phase
Mutually electrical connection, more than two second electrode leads 122 that each second battery unit G2 includes pass through second group of tie point P2
It is electrically connected to each other, electrical connector 200 is again by least one first electrode lead 121 and at least one 122 electricity of second electrode lead
Connection, to realize whole first electrode leads 121 of the first battery unit G1 and all the second electricity of the second battery unit G2
The electrical connection of pole lead 122.First group of tie point P1, second group of tie point P2 can be respectively formed in welding more than twice,
To improve flexibility and convenience when welding.
In the contact conductor connection structure shown in above-mentioned Fig. 3 a, Fig. 3 b, first electrode lead 121 is provided with the first root
121b and first connecting portion 121a, second electrode lead 122 are provided with the second root 122b and second connecting portion 122a.Wherein,
On second direction Y, size of the size less than the first root 121b of first connecting portion 121a, the size of second connecting portion 122a
Less than the size of the second root 122b so that in contact conductor connection structure first electrode lead 121 first connecting portion 121a
Setting is mutually avoided with the second connecting portion 122a of second electrode lead 122.In some other embodiment, it can also be passed through
Its mode realizes the first connecting portion 121a's of the first electrode lead 121 and second connecting portion 122a of second electrode lead 122
Mutually evacuation.For example, first connecting portion 121a is located at the side second direction Y of first electrode lead 121, and opposite second electrode
Lead 122 is prominent in second direction Y；Second connecting portion 122a is located at the other side of the second direction Y of second electrode lead 122.
Opposite first pole lead 121 is prominent in the other side of second direction Y, to realize first connecting portion 121a and second connecting portion
The mutual evacuation of 122a.
Fig. 6 shows the stereogram exploded view of another contact conductor connection structure of the utility model embodiment, shown in Fig. 6
In embodiment, first electrode lead 121, second electrode lead 122 are sheet lead, specifically be can be along first direction X
The rectangular patch lead of extension.Wherein, the second of the first electrode lead 121 of the first battery unit G1 and the second battery unit G2
The mutual dislocation on second direction Y of contact conductor 122 so that the first connecting portion 121a being arranged on first electrode lead 121 with
The second connecting portion 122a being arranged on second electrode lead 122 mutual dislocation on second direction Y.
The battery modules of the present embodiment include electrical connector 200, and electrical connector 200 is provided with the electrical connection section 210 of sheet,
Electrical connection section 210 includes the first electrical connection area 211 and the second electrical connection area 212 of Y arrangement in a second direction.First battery unit
The position of the first electrode lead 121 of G1 and size on second direction Y can with first be electrically connected the position in area 211 with
And the size on second direction Y is corresponding；The position of the first electrode lead 122 of second battery unit G2 and in second direction
Size on Y can size with the position in the second electrical connection area 212 and on second direction Y it is corresponding.
N number of first electrode lead 121 can be connect by first group of tie point P1 with the first electrical connection area 211, second group of company
N number of second electrode lead 122 can be connect by contact P2 with the second electrical connection area 212, to realize N number of first electrode lead
121 are electrically connected with N number of second electrode lead 122.First electrode lead 121, the second electrode lead 122 of sheet are mutually wrong
Position, so that first group of tie point P1 and second group of tie point P2 mutual dislocation, so that every group of tie point only connects same fusing point
Contact conductor, when avoiding tie point while connecting fusing point Different electrodes lead, for meet welding high-melting-point contact conductor when weldering
Influence of the jointing temp to the welding surface for including low melting point contact conductor, to improve the weld strength and electricity at each group tie point
The connection reliability of the contact conductor of Chi Mo group.
According to the utility model embodiment as described above, these embodiments details all there is no detailed descriptionthe,
Also not limiting the utility model is only the specific embodiment.Obviously, as described above, many modification and change can be made
Change.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the principles of the present invention and actually to answer
With so that skilled artisan be enable to utilize the utility model and repairing on the basis of the utility model well
Change use.The utility model is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a kind of battery modules, which is characterized in that including the first battery unit (G1) and the second battery unit (G2), described
One battery unit (G1) and second battery unit (G2) respectively include N number of secondary cell (100), and N is more than or equal to 2
Integer, each secondary cell (100) include opposite polarity first electrode lead (121) and second electrode lead (122),
The fusing point of the first electrode lead (121) is different from the fusing point of the second electrode lead (122)；
Wherein, the battery modules have first group of tie point, second group of tie point, and first group of tie point is by described first
The N number of first electrode lead (121) electrical connection of battery unit (G1), second group of tie point is by the second battery list
N number of second electrode lead (122) electrical connection of first (G2), first group of tie point and second group of tie point are mutual
Dislocation；The battery modules further include electrical connector (200), at least one of first battery unit (G1), first electricity
At least one described second electrode that pole lead (121) passes through the electrical connector (200) and second battery unit (G2)
Lead (122) connection.
2. battery modules according to claim 1, which is characterized in that the first electrode lead (121), second electricity
Pole lead (122) extends along first direction (X), and the first electrode lead (121) includes first connecting portion (121a), described
Second electrode lead (122) includes second connecting portion (122a), the first connecting portion of first battery unit (G1)
The second connecting portion (122a) of (121a) and second battery unit (G2) mutually avoids on second direction (Y) to be set
It sets, the second direction (Y) is intersected with the first direction (X),
First group of tie point connects the first of N number of first electrode lead (121) of first battery unit (G1)
Socket part (121a) is connect with the electrical connector (200), and second group of tie point is N number of by second battery unit (G2)
The second connecting portion (122a) of the second electrode lead (122) is connect with the electrical connector (200).
3. battery modules according to claim 2, which is characterized in that the first electrode lead (121), second electricity
Pole lead (122) is sheet lead, the first electrode lead (121) and described second of first battery unit (G1)
The second electrode lead (122) of battery unit (G2) mutual dislocation on the second direction (Y).
4. battery modules according to claim 2, which is characterized in that each secondary cell (100) further includes battery
Main body (110), the first electrode lead (121) are provided with the first root (121b), and first root (121b) connects institute
Battery main body (110) and the first connecting portion (121a) are stated, the second electrode lead (122) is provided with the second root
(122b), second root (122b) connect the battery main body (110) and the second connecting portion (122a),
Wherein, on the second direction (Y), the size of the first connecting portion (121a) is less than first root (121b)
Size, the size of the second connecting portion (122a) is less than the size of second root (122b).
5. battery modules according to claim 4, which is characterized in that on the second direction (Y), first connection
The size in portion (121a) is less than the half of the first root (121b) size,
And/or on the second direction (Y), the size of the second connecting portion (122a) is less than second root
The half of (122b) size.
6. battery modules according to claim 2, which is characterized in that the electrical connector (200) is provided with the electricity of sheet
Interconnecting piece (210), the electrical connection section (210) include the first electrical connection area (211) and the along the second direction (Y) arrangement
Two electrical connections area (212),
N number of first electrode lead (121) connect by first group of tie point with first electrical connection area (211), institute
It states second group of tie point and connect N number of second electrode lead (122) with second electrical connection area (212).
7. battery modules according to claim 6, which is characterized in that first electrical connection area (211) and described second
Fluting (230) are offered between electrical connection area (212).
8. battery modules according to claim 7, which is characterized in that the fluting (230) is on the second direction (Y)
Size be more than or equal to 0.1 millimeter.
9. battery modules according to claim 7, which is characterized in that the electrical connector (200) is additionally provided with support portion
(220), the support portion (220) connect with the electrical connection section (210) and the relatively described electrical connection section (210) bends, described
Fluting (230) extends in the support portion (220), and forms rounded structure (240) in the support portion (220).
10. battery modules according to claim 7, which is characterized in that the thickness of the electrical connection section (210) is greater than described
The thickness of first electrode lead (121)；And the thickness of the electrical connection section (210) is greater than the second electrode lead (122)
Thickness.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920147139.7U CN209329024U (en) | 2019-01-28 | 2019-01-28 | Battery modules |
| KR1020217024294A KR102630674B1 (en) | 2019-01-28 | 2019-12-26 | battery module |
| PCT/CN2019/128667 WO2020155968A1 (en) | 2019-01-28 | 2019-12-26 | Battery module |
| JP2021543399A JP7314285B2 (en) | 2019-01-28 | 2019-12-26 | battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920147139.7U CN209329024U (en) | 2019-01-28 | 2019-01-28 | Battery modules |
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| CN209329024U true CN209329024U (en) | 2019-08-30 |
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| CN201920147139.7U Active CN209329024U (en) | 2019-01-28 | 2019-01-28 | Battery modules |
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| Country | Link |
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| JP (1) | JP7314285B2 (en) |
| KR (1) | KR102630674B1 (en) |
| CN (1) | CN209329024U (en) |
| WO (1) | WO2020155968A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490216A (en) * | 2019-01-28 | 2020-08-04 | 宁德时代新能源科技股份有限公司 | Battery module |
| WO2020155968A1 (en) * | 2019-01-28 | 2020-08-06 | 宁德时代新能源科技股份有限公司 | Battery module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114976499B (en) * | 2022-05-27 | 2024-05-17 | 孚能科技(赣州)股份有限公司 | A battery cell connection assembly and a battery module |
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| JP2004087337A (en) * | 2002-08-27 | 2004-03-18 | Nissan Motor Co Ltd | Battery laminated aggregate and battery used for it |
| JP4745122B2 (en) * | 2006-05-18 | 2011-08-10 | 日立ビークルエナジー株式会社 | Secondary battery, battery pack and battery module |
| US7896219B2 (en) * | 2009-03-03 | 2011-03-01 | GM Global Technology Operations LLC | Method and apparatus for ultrasonic welding of terminals |
| US20110052969A1 (en) * | 2009-09-01 | 2011-03-03 | Gm Global Technology Operations, Inc. | Cell tab joining for battery modules |
| US9385360B2 (en) * | 2010-08-10 | 2016-07-05 | GM Global Technology Operations LLC | Integrated stackable battery |
| US20120315531A1 (en) * | 2011-06-10 | 2012-12-13 | GM Global Technology Operations LLC | Battery cell connection apparatus |
| CN103650208B (en) * | 2011-07-13 | 2016-04-06 | 株式会社Lg化学 | There is the battery module improving connection reliability and the battery pack adopting this battery module |
| CN205069735U (en) * | 2015-09-30 | 2016-03-02 | 惠州比亚迪实业有限公司 | Power battery connector, power battery module, power battery package, car |
| JP2017168340A (en) * | 2016-03-17 | 2017-09-21 | パナソニックＩｐマネジメント株式会社 | Welded structure, battery using the same, and method of manufacturing welded structure |
| WO2017199583A1 (en) * | 2016-05-19 | 2017-11-23 | 株式会社村田製作所 | Cell, cell pack, electronic device, electric vehicle, electricity storage apparatus, and power system |
| WO2018163479A1 (en) * | 2017-03-07 | 2018-09-13 | Ｎｅｃエナジーデバイス株式会社 | Battery pack and battery pack manufacturing method |
| CN207800734U (en) * | 2017-11-23 | 2018-08-31 | 北京华特时代电动汽车技术有限公司 | Battery pack assembly and connection component |
| CN209329024U (en) * | 2019-01-28 | 2019-08-30 | 宁德时代新能源科技股份有限公司 | Battery modules |
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2019
- 2019-01-28 CN CN201920147139.7U patent/CN209329024U/en active Active
- 2019-12-26 WO PCT/CN2019/128667 patent/WO2020155968A1/en active Application Filing
- 2019-12-26 JP JP2021543399A patent/JP7314285B2/en active Active
- 2019-12-26 KR KR1020217024294A patent/KR102630674B1/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490216A (en) * | 2019-01-28 | 2020-08-04 | 宁德时代新能源科技股份有限公司 | Battery module |
| WO2020155968A1 (en) * | 2019-01-28 | 2020-08-06 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN111490216B (en) * | 2019-01-28 | 2024-11-29 | 宁德时代新能源科技股份有限公司 | Battery module |
Also Published As
| Publication number | Publication date |
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| WO2020155968A1 (en) | 2020-08-06 |
| JP2022518812A (en) | 2022-03-16 |
| KR20210130709A (en) | 2021-11-01 |
| JP7314285B2 (en) | 2023-07-25 |
| KR102630674B1 (en) | 2024-01-29 |
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