CN205723727U - Power battery pack - Google Patents
Power battery pack Download PDFInfo
- Publication number
- CN205723727U CN205723727U CN201620373672.1U CN201620373672U CN205723727U CN 205723727 U CN205723727 U CN 205723727U CN 201620373672 U CN201620373672 U CN 201620373672U CN 205723727 U CN205723727 U CN 205723727U
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- Prior art keywords
- battery pack
- power battery
- fuse
- copper
- aluminium sheet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The utility model relates to a kind of power battery pack.Its technical scheme: described power battery pack both positive and negative polarity is respectively equipped with copper-aluminum composite board, and described copper-aluminum composite board one side is copper coin face, and described copper-aluminum composite board another side is aluminium sheet face；Described copper coin is facing to power battery pack electrode, described aluminium sheet face power battery pack electrode dorsad；By fuse (2) welding parallel connection between the cell (1) of described each row, use ultrasonic bonding between described cell electrode and fuse (2), between described aluminium sheet face and fuse (2), use ultrasonic bonding.Use after the technical solution of the utility model, not only easy to process, reduce cost, battery pack be connected in parallel stable, reliable, electric conductivity is good.
Description
Technical field
The utility model relates to a kind of power battery pack, particularly to a kind of high-power power battery group.Its energy
The power such as the battery pack being enough in the battery pack of electric automobile, the battery pack of battery-operated motor cycle, electric bicycle
The manufacture processing technique field of battery pack.
Background technology
High-power power battery group, as a kind of power resources, is that Developing electric automobile, emergency communication set
The first-selection of standby and special equipment power supply.
Each battery unit is processed by battery pack exactly, encapsulation etc. is processed, be allowed to by certain series connection and
Connection mode forms the process of a battery pack that can meet user's request or battery bag, the power of electric automobile
Battery pack is containing by electrokinetic cell module, battery management system (English: BATTERY MANAGEMENT
SYSTEM, is called for short: BMS) etc. integrated be fixed in high-tension battery case, makes and disclosure satisfy that electric automobile
The assembly of the safe and reliable electrokinetic cell system travelling required property indices.
Series connection and connection in series-parallel mixing after being connected with of the battery pack of electric automobile is in parallel, first in parallel after first connecting
The modes such as connection.Existing method of attachment includes: first, and each battery and nickel strap directly use resistance welder point
Weldering connects；Second, each battery and copper nickel compound piece are directly connected by resistance welder spot welding.For convenience of reason
Solving, the parallel of existing battery pack is as it is shown in fig. 7, power battery pack includes some cells
1, some cells 1 constitute power battery pack by battery bracket, between the both positive and negative polarity of cell all passes through
Disconnected fuse welds with existing cylinder manifold.
During actually used, inventor finds: use existing mode processing dynamics battery pack, manufacturing process
More complicated, cost is very high；Battery pack electric conductivity is not good, and battery pack easily occurs that uniformity is deteriorated, and reduces
Mileages of continuation.
Content of the invention
The utility model purpose to be realized: battery pack be connected in parallel stable, reliable, electric conductivity is good.
Power battery pack, it includes some cells, and described some cells pass through battery bracket structure
Become power battery pack body, it is characterised in that:
Described power battery pack both positive and negative polarity is respectively equipped with copper-aluminum composite board, and described copper-aluminum composite board one side is copper coin
Face, described copper-aluminum composite board another side is aluminium sheet face；Described copper coin is facing to power battery pack electrode, described
Aluminium sheet face power battery pack electrode dorsad；Described copper-aluminum composite board is provided with and cooperates with cell profile
Hole；It is provided with insulation spacer between described copper coin face and power battery pack positive pole；The monomer electricity of described each row
By a continuous print fuse welding parallel connection between the electrode of pond, between described cell electrode and fuse
Pass through ultrasonic bonding；Pass through ultrasonic bonding between described aluminium sheet face and fuse.
Further, each cell electrode described passes through two means of spot welds and fuse is affixed, described aluminium sheet face
Affixed by two means of spot welds and fuse.
Further, described fuse is fine aluminium silk.
Further, described supersonic welding contact is coated with the pad making electrical contact with conductive paste or silver slurry.
Further, described copper coin face thickness is 0.1mm～0.3mm；Described aluminium sheet face thickness is 1mm.
Beneficial effect after employing technique scheme:
According to the requirement of current density, reasonable utilization Copper-Aluminum compound plate structure.Copper coin face thickness about exists
About 0.1mm～0.3mm, is used for conducting electricity, heat conduction；Aluminium sheet face is general all at more than 1mm, easy and fine aluminium silk
Ultrasonic wire bonding welds, and simultaneously works as the effect of conduction, heat conduction, heat radiation.
The copper-aluminum composite board length of equivalent weight or volume are 2.5～2.7 times of fine copper row, effectively reduce battery
Group quality.Certainly, in order to improve corrosion resistance, process tin plating, zinc-plated can be carried out on copper coin face surface.
Use copper-aluminum composite board, save copper and mickel resource, reduce and produce supporting cost, environmental protection.
Copper coin face solves electric conductivity, can directly regard electrode converging plate, simultaneously near compression cell
Shell, not only plays the effect of heat conduction, heat radiation, and all batteries in parallel connection temperature in playing battery module
Equilibrium uniformity.The fuse that aluminium sheet face and supersonic pressure welding machine are sent carries out ultrasonic bonding, cell
The fuse that electrode and supersonic pressure welding machine are sent carries out ultrasonic bonding, and fuse can play what electric current connected
Effect, improves battery pack electric conductivity.
Fuse not only plays the electric action of battery and copper-aluminum composite board, and plays each cell
Action of fuse.
Use fuse in parallel, ultrasonic bonding.When repairing or removing battery module, remove easy to connect,
That is: cut off or pull off fuse.Compared with existing copper nickel compound piece, copper nickel compound piece uses resistance spot welding,
Connect very firm, repair or remove extremely difficult.
Use 2 special ultrasonic bonding modes, improve each cell contact reliability in parallel, steady
Qualitative.
Point gum machine is used to carry out a glue to each solder joint.Carry out a glue with electrical contact conducting resinl, silver slurry etc.,
Play protection supersonic welding contact not oxidized, more play the machinery of the electric conductivity strengthening pad and pad
Intensity.
Use cylindrical cell, facilitate the permutation and combination of cell, meet major part monomer on market
The dimensional requirement of battery, such as the cell of the 18650th, the 26650th, the 26800th, 32650 equal-specifications.
From economy and social perspective, after using power battery pack described in the utility model, averagely each car
More than 5000 yuan of costs can be saved.As a example by motor bus, each can save more than 20,000 yuan.By 2016
Year Chinese automobile annual production 500000 calculating, can save social cost 30～5,000,000,000.
Brief description
Fig. 1 is battery pack front view structure schematic diagram described in the utility model；
Fig. 2 is that the A of Fig. 1 is to structural representation；
Fig. 3 is that the B of Fig. 1 is to structural representation；
Fig. 4 is that the C of Fig. 1 is to structural representation；
Fig. 5 is that the D of Fig. 1 is to structural representation；
Fig. 6 is the decomposition texture schematic diagram of Fig. 1；
Fig. 7 is the battery pack parallel connection structure schematic diagram of prior art.
In figure: the 1st, cell, the 2nd, fuse, the 3rd, cylinder manifold, 3a, positive pole cylinder manifold, 3b, negative
Pole cylinder manifold, the 4th, pad, 5a, positive pole ear, 5b, negative lug, 6a, 1# electrode suppor, 6b,
2# electrode suppor, the 7th, electrode connecting plate, 8a, 1# securing member, 8b, 2# securing member, 8c, 3# securing member,
9th, insulation spacer, 10a, 1# hole, 10b, 2# hole, the 11st, fuse conductive paste coating.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is described in more detail.
Embodiment one
As shown in figs. 1 to 6, the method for attachment of a kind of power battery pack, if above-mentioned power battery pack includes
Dry cell the 1st, cylinder manifold 3 and battery bracket, above-mentioned cell 1 anode portion is propped up by 1# battery
Frame 6a fixes, and above-mentioned cell 1 cathode portion is fixed by 2# battery bracket 6b.
As a shown in Figure 6, above-mentioned cylinder manifold 3 is copper-aluminum composite board, and copper-aluminum composite board one side is copper coin face,
Copper-aluminum composite board another side is aluminium sheet face.Copper coin moves dorsad facing to power battery pack electrode, described aluminium sheet face
Power battery set electrode.Such as Fig. 1, shown in the 4th, the 5th, 6, illustrate: positive pole cylinder manifold 3a is Copper-Aluminum compound
Plate, the copper coin of positive pole cylinder manifold 3a is facing to power battery pack positive pole, the aluminium sheet face back of the body of positive pole cylinder manifold 3a
To power battery pack positive pole；Negative pole cylinder manifold 3b is copper-aluminum composite board, and the copper coin of negative pole cylinder manifold 3b faces
To power battery pack negative pole, the aluminium sheet face power battery pack negative pole dorsad of negative pole cylinder manifold 3b.
As shown in Figure 6, above-mentioned 1# battery bracket 6a and 2# battery bracket 6b is equipped with and cell
The hole that profile cooperates, above-mentioned positive pole cylinder manifold 3a is provided with the hole cooperating with cell profile
10a, above-mentioned negative pole cylinder manifold 3b are provided with the hole 10b cooperating with cell profile, above-mentioned copper coin
Being provided with insulation spacer 9 between face and power battery pack positive pole, above-mentioned insulation spacer external diameter is as cell outside diameter
Size, above-mentioned insulation spacer internal diameter size as hole on cylinder manifold.
Such as Fig. 1, shown in the 2nd, 6, above-mentioned positive pole cylinder manifold 3a is provided with positive pole ear 5a, and above-mentioned negative pole confluxes
Plate 3b is provided with negative lug 5b, is provided with electrode connecting plate 7 between above-mentioned positive pole ear 5a and negative lug 5b.
As a shown in Figure 6, above-mentioned positive pole cylinder manifold 3a is by 1# securing member 8a and 1# battery bracket 6a
Affixed, above-mentioned negative pole cylinder manifold 3b is affixed by 2# securing member 8b and 2# battery bracket 6b, above-mentioned positive pole
Lug 5a is affixed with electrode connecting plate 7 one end by 3# securing member 8c, and above-mentioned negative lug 5b passes through 3#
Securing member 8c is affixed with electrode connecting plate 7 other end.
As shown in Figure 4,5, a continuous print fuse 2 is passed through between the cell electrode of above-mentioned each row
Welding parallel connection, uses ultrasonic bonding between above-mentioned cell electrode and fuse 2；Above-mentioned aluminium sheet face and
Ultrasonic bonding is used between fuse 2.
So, some cell electrodes, can be by the weldering in parallel of a fuse 2 between copper-aluminum composite board 3
Connecing, fuse not only plays the electric action of battery and copper-aluminum composite board, and plays each cell
Action of fuse.
Copper coin face solves electric conductivity, can directly regard electrode converging plate, simultaneously near compression cell
Shell, not only plays the effect of heat conduction, heat radiation, and all batteries in parallel connection temperature in playing battery module
Equilibrium uniformity.The fuse that aluminium sheet face and supersonic pressure welding machine are sent carries out ultrasonic bonding, cell
The fuse that electrode and supersonic pressure welding machine are sent carries out ultrasonic bonding, and fuse can play what electric current connected
Effect, improves battery pack electric conductivity.
Above-mentioned securing member can but be not limited to screw.
Embodiment two
Such as Fig. 1, shown in the 3rd, 4, as a kind of improvement of described electrokinetic cell partial unit connecting method, described monomer
Use two means of spot welds between battery electrode and fuse 2, between described aluminium sheet face and fuse 2, use 2 points
Welding, described welding step is as follows:
A, between described fuse and aluminium sheet face weld a point；
B, draw described fuse to battery electrode, between fuse and battery electrode, weld a point；
C, draw described fuse 1mm～2mm, between fuse and battery electrode, weld a point again；
D, draw described fuse to aluminium sheet face, between fuse and aluminium sheet face, weld a point；
E, draw described fuse 1mm～2mm, between fuse and aluminium sheet face, weld a point again；
F, repetition step b, c, d, e, all weld to the cell being positioned at same row and complete；
G, draw described fuse to aluminium sheet face, between fuse and aluminum deck, weld a point.
So, the cell being positioned on a row is by a continuous print fuse and joins together.Use two
Point ultrasonic bonding mode, improves each cell reliability in parallel, stability, and repairs or remove electricity
Pond module is convenient.
Separately, inventor finds through practice test: above-mentioned fuse 2 uses fine aluminium silk, best results.
Above-mentioned cell can select the cell of random appearance, such as rectangle.In practice preferably cylindric
Cell, its scope of application is the widest.When select cylindric cell when, the hole on copper-aluminum composite board and
Hole on electrode suppor is circular hole.
For improving reliability, the stability of pad 4, at described supersonic welding contact, preferably employ fuse
Conductive paste coating 11, fuse conductive paste coating 11 can be electrical contact conductive paste or silver slurry, its user
Formula is a glue.Electrical contact conductive paste can but be not limited to DDG-A high-efficient electrical contacts conductive paste.
Embodiment three
Power battery pack, it includes some cells the 1st, cylinder manifold 3 and battery bracket, above-mentioned monomer
Battery 1 anode portion is fixed by 1# battery bracket 6a, and above-mentioned cell 1 cathode portion is by 2# electricity
Pond support 6b fixes.
As a shown in Figure 6, above-mentioned cylinder manifold 3 is copper-aluminum composite board, and copper-aluminum composite board one side is copper coin face,
Copper-aluminum composite board another side is aluminium sheet face.Copper coin moves dorsad facing to power battery pack electrode, described aluminium sheet face
Power battery set electrode.Such as Fig. 1, shown in the 4th, the 5th, 6, illustrate: positive pole cylinder manifold 3a is Copper-Aluminum compound
Plate, the copper coin of positive pole cylinder manifold 3a is facing to power battery pack positive pole, the aluminium sheet face back of the body of positive pole cylinder manifold 3a
To power battery pack positive pole；Negative pole cylinder manifold 3b is copper-aluminum composite board, and the copper coin of negative pole cylinder manifold 3b faces
To power battery pack negative pole, the aluminium sheet face power battery pack negative pole dorsad of negative pole cylinder manifold 3b.
As shown in Figure 6, above-mentioned 1# battery bracket 6a and 2# battery bracket 6b is equipped with and cell
The hole that profile cooperates, above-mentioned positive pole cylinder manifold 3a is provided with the hole cooperating with cell profile
10a, above-mentioned negative pole cylinder manifold 3b are provided with the hole 10b cooperating with cell profile, above-mentioned copper coin
Being provided with insulation spacer 9 between face and power battery pack positive pole, above-mentioned insulation spacer external diameter is as cell outside diameter
Size, above-mentioned insulation spacer internal diameter size as hole on cylinder manifold.
Such as Fig. 1, shown in the 2nd, 6, above-mentioned positive pole cylinder manifold 3a is provided with positive pole ear 5a, and above-mentioned negative pole confluxes
Plate 3b is provided with negative lug 5b, is provided with electrode connecting plate 7 between above-mentioned positive pole ear 5a and negative lug 5b.
As a shown in Figure 6, above-mentioned positive pole cylinder manifold 3a is by 1# securing member 8a and 1# battery bracket 6a
Affixed, above-mentioned negative pole cylinder manifold 3b is affixed by 2# securing member 8b and 2# battery bracket 6b, above-mentioned positive pole
Lug 5a is affixed with electrode connecting plate 7 one end by 3# securing member 8c, and above-mentioned negative lug 5b passes through 3#
Securing member 8c is affixed with electrode connecting plate 7 other end.
As shown in Figure 4,5, a continuous print fuse 2 is passed through between the cell electrode of above-mentioned each row
Welding parallel connection, uses ultrasonic bonding between above-mentioned cell electrode and fuse 2；Above-mentioned aluminium sheet face and
Ultrasonic bonding is used between fuse 2.
Above-mentioned securing member can but be not limited to screw.
Embodiment four
As a kind of improvement of power battery pack described in the utility model, described cell electrode and fuse
Use two means of spot welds between 2, between described aluminium sheet face and fuse 2, use two means of spot welds.Its welding step
Identical with embodiment two.
Embodiment five
As a kind of improvement of power battery pack described in the utility model, described copper coin face thickness be 0.1mm～
0.3mm；Described aluminium sheet face thickness is 1mm.Separately, the preferred fine aluminium silk of described fuse 2.
The utility model is not limited to above-described embodiment, and the technical side being formed is replaced in all employing equivalents or equivalence
Case belongs to the claimed scope of the utility model.
Claims (5)
1. power battery pack, it includes some cells (1), and described some cells (1) are led to
Cross battery bracket (6a, 6b) and constitute power battery pack body, it is characterised in that:
Described power battery pack both positive and negative polarity is respectively equipped with copper-aluminum composite board, and described copper-aluminum composite board one side is copper coin
Face, described copper-aluminum composite board another side is aluminium sheet face；Described copper coin is facing to power battery pack electrode, described
Aluminium sheet face power battery pack electrode dorsad；Described copper-aluminum composite board is provided with and cooperates with cell profile
Hole (10a, 10b)；It is provided with insulation spacer (9) between described copper coin face and power battery pack positive pole；
By continuous print fuse (2) welding parallel connection, institute between the cell electrode of described each row
State and pass through ultrasonic bonding between cell electrode and fuse (2)；Described aluminium sheet face and fuse (2)
Between pass through ultrasonic bonding.
2. power battery pack according to claim 1, it is characterised in that: each cell electricity described
Two means of spot welds are passed through in pole and fuse (2) is affixed, and two means of spot welds and fuse (2) are passed through in described aluminium sheet face
Affixed.
3. power battery pack according to claim 1, it is characterised in that: described fuse (2) is
Fine aluminium silk.
4. power battery pack according to claim 1, it is characterised in that: described supersonic welding contact is
Scribble electrical contact conductive paste or the pad of silver slurry.
5. power battery pack according to claim 1, it is characterised in that: described copper coin face thickness is
0.1mm～0.3mm；Described aluminium sheet face thickness is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373672.1U CN205723727U (en) | 2016-04-28 | 2016-04-28 | Power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373672.1U CN205723727U (en) | 2016-04-28 | 2016-04-28 | Power battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN205723727U true CN205723727U (en) | 2016-11-23 |
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ID=57291403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620373672.1U Active CN205723727U (en) | 2016-04-28 | 2016-04-28 | Power battery pack |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784571A (en) * | 2017-02-12 | 2017-05-31 | 苏州市博得立电源科技有限公司 | A kind of battery bag battery core welding procedure in parallel |
| CN107331826A (en) * | 2016-04-28 | 2017-11-07 | 周伟 | The connection method of power battery pack and the battery pack produced with this method |
| CN107492627A (en) * | 2017-08-14 | 2017-12-19 | 苏州市博得立电源科技有限公司 | Lithium ion battery module based on BONDING techniques |
| CN107732070A (en) * | 2017-10-13 | 2018-02-23 | 华霆（合肥）动力技术有限公司 | Battery modules and assemble method |
| CN111063855A (en) * | 2018-10-17 | 2020-04-24 | 欣旺达电动汽车电池有限公司 | Unilateral welding method for cylindrical battery cell |
-
2016
- 2016-04-28 CN CN201620373672.1U patent/CN205723727U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331826A (en) * | 2016-04-28 | 2017-11-07 | 周伟 | The connection method of power battery pack and the battery pack produced with this method |
| CN106784571A (en) * | 2017-02-12 | 2017-05-31 | 苏州市博得立电源科技有限公司 | A kind of battery bag battery core welding procedure in parallel |
| CN107492627A (en) * | 2017-08-14 | 2017-12-19 | 苏州市博得立电源科技有限公司 | Lithium ion battery module based on BONDING techniques |
| CN107732070A (en) * | 2017-10-13 | 2018-02-23 | 华霆（合肥）动力技术有限公司 | Battery modules and assemble method |
| CN111063855A (en) * | 2018-10-17 | 2020-04-24 | 欣旺达电动汽车电池有限公司 | Unilateral welding method for cylindrical battery cell |
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