CN206225447U - Busbar component, electrokinetic cell overload protective device and power battery assembly - Google Patents
Busbar component, electrokinetic cell overload protective device and power battery assembly Download PDFInfo
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- CN206225447U CN206225447U CN201621064256.XU CN201621064256U CN206225447U CN 206225447 U CN206225447 U CN 206225447U CN 201621064256 U CN201621064256 U CN 201621064256U CN 206225447 U CN206225447 U CN 206225447U
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- linking arm
- protective device
- ptc
- overload protective
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- 230000001681 protective effect Effects 0.000 title claims abstract description 35
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000008602 contraction Effects 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a kind of busbar component, electrokinetic cell overload protective device and power battery assembly.Wherein busbar component includes：First linking arm, first linking arm has one or more connection ends, to be connected with upstream battery unit；Second linking arm, second linking arm has one or more connection ends, to be connected with downstream battery unit；And it is connected to the PTC units between first linking arm and second linking arm.According to busbar component of the present utility model, overload protective device, power battery assembly and automobile etc. have more preferably safety and stability.
Description
Technical field
The utility model is related to new-energy automobile power battery overload protection technical field, more specifically, the utility model
It is related to a kind of busbar component, the overload protective device and power battery assembly of electrokinetic cell.
Background technology
With the development of new-energy automobile particularly pure electric automobile technology, the safety of electric automobile is increasingly everybody institute
Pay attention to.Electrokinetic cell as electric automobile high voltage supply part, the overload protection of the more crucial electrokinetic cells of its security sets
Count the security for improving battery bag.
For the power battery assembly of existing electric automobile, the overload protection of electrokinetic cell is generally included based on electricity
Overload current-limiting protection and fuse protection two parts based on fuse of pond management system (BMS).Overload current-limiting protection passes through BMS
Monitoring cell temperature and current signal, send instructions to full-vehicle control unit (VCU), then pass through after temperature and electric current are too high
VCU sends the commands to reduce external load, and whole control process is tediously long and complexity, and needs to control execution machine by calculator
, there is failure risk in structure；The latter's fuse protection in the case of large load current, produces big calorimetric by fuse, directly will
Blown fuse, causes mechanical open circuit.
Utility model content
The purpose of this utility model is to provide a kind of more perfect electrokinetic cell overload protective device.
Other purposes of the present utility model are to overcome or at least alleviate problems of the prior art.
According to one side of the present utility model, there is provided a kind of busbar component of electrokinetic cell for automobile, it includes：
First linking arm, first linking arm has one or more connection ends, to be connected with upstream battery unit；
Second linking arm, second linking arm has one or more connection ends, to be connected with downstream battery unit；
And
It is connected to the PTC units between first linking arm and second linking arm.
Alternatively, in some embodiments of busbar component, the PTC units in the form of sheets, first linking arm and institute
The second linking arm is stated to be respectively connecting on the opposite face of the PTC units.
Alternatively, in some embodiments of busbar component, first linking arm and second linking arm are welded respectively
It is connected on the PTC units.
Alternatively, in some embodiments of busbar component, first linking arm and/or second linking arm with
There is contraction flow region near the PTC units junction.
Alternatively, in some embodiments of busbar component, first linking arm and second linking arm and institute
State PTC units and insulated heat coating is coated near junction.
Alternatively, in some embodiments of busbar component, first linking arm and/or second linking arm include
Stem portion and one or more connection ends extended from the stem portion, the connection end are used to be connected with battery unit,
And with mounting hole.
Alternatively, in some embodiments of busbar component, the stem portion is wrapped up and the connection end by insulating part
Wrapped up by insulation sleeve.
According to another aspect of the present utility model, there is provided a kind of overload protective device of electrokinetic cell for automobile,
The overload protective device includes the overload protective device based on PTC units, the overload protective device bag based on PTC units
Include and be connected to one or more PTC units between battery unit.
Alternatively, in some embodiments of overload protective device, one or more PTC units are by new according to this practicality
The busbar component of the embodiment of type is connected between battery unit.
Alternatively, in some embodiments of overload protective device, the overload protective device also includes being based on resistance wire
Fuse protection system and the overload current-limiting protection system based on battery management system.
Alternatively, in some embodiments of overload protective device, the overload protective device is arranged so that the base
The overload current-limiting protection system based on battery management system is prior to or subsequent in the overload protective device of PTC units to act as
With.
Alternatively, in some embodiments of overload protective device, the battery management system is by PTC units two of sampling
The voltage at end monitors the instant resistance of the PTC.
According to another aspect of the present utility model, there is provided a kind of power battery assembly for automobile, it is characterised in that
The power battery assembly includes multiple battery units and mono- with one or more PTC of the multiple battery cells in series
Unit.
Ground can be revolved, in some embodiments of power battery assembly, one or more PTC units are by new according to this practicality
The busbar component of the embodiment of type is connected between battery unit.
It is described according to another aspect of the present utility model, there is provided a kind of overload protection method of the electrokinetic cell of automobile
Method includes to be connected on according to the busbar component of embodiment of the present utility model the battery unit of the electrokinetic cell for automobile
Between.
According to busbar component of the present utility model, overload protective device and method and power battery assembly etc. have more preferably
Safety and stability.
Brief description of the drawings
Refer to the attached drawing, of the present utility model above-mentioned and other features will become obvious, wherein：
Fig. 1 shows the temperature-resistance characteristic curve of PTC units；
Fig. 2 shows the busbar component according to embodiment of the present utility model；
Fig. 3 shows the busbar component according to another embodiment of the present utility model；
Fig. 4 shows the view of another angle of the busbar component in Fig. 3；And
Fig. 5 shows the battery component according to embodiment of the present utility model.
Specific embodiment：
It is readily appreciated that, according to the technical solution of the utility model, in the case where the utility model connotation is not changed, this area
Those skilled in the art can propose the various structures mode that can mutually replace and implementation.Therefore, implement in detail below
Mode and accompanying drawing are only the exemplary illustrations to the technical solution of the utility model, and are not to be construed as of the present utility model complete
Portion or be considered as defines or limits to technical solutions of the utility model.
Mention in this manual or up, down, left, right, before and after, front, the back side, top, the bottom that may mention etc.
Orientation term is defined relative to the construction shown in each accompanying drawing, and they are relative concepts, it is therefore possible to meeting root
Correspondingly changed according to its residing diverse location, different use states.So, also should not be by these or others side
Position term is construed to restricted term.
Fig. 1 is refer to, PTC is also referred to as semistor, its resistance value R0Exceed predetermined point T in temperature0Afterwards with
Temperature positive correlation, and quickly increase, such as in the T of diagram1During temperature, resistance R1Rise to R0Several times.At the same time, PTC
Temperature and the electric current positive correlation by PTC.Using the characteristic of PTC, can be to existing electric motor car or the power of hybrid electric vehicle
The overload protective device of battery is optimized.
Specifically, Fig. 2 is refer to, according to some embodiments of the present utility model, there is provided a kind of busbar component, its use
Between battery unit is connected to, such as between every 6 battery units or between every 12 battery units, or otherwise connect
It is connected between the battery unit of series connection.Busbar component includes one or more connections for having for being connected with upstream battery unit
First linking arm 84 at end 811,812, with one or more connection ends 851,853 for being connected with downstream battery unit
Second linking arm 88, and it is connected to the PTC units 7 between the first linking arm 84 and the second linking arm 88.
In certain embodiments, the first linking arm 84 includes stem portion 81 and one or many extended from stem portion 81
Individual connection end, is in the illustrated embodiment two connection ends 811,812.In certain embodiments, stem portion 81 is essentially flat
Tabular, and each connection end 811,812 can be substantially perpendicular to the extension of the ground of stem portion 81, or enter by flat extension
Row bending forms connection end 811,812.Each connection end 811,812 can respectively have mounting hole 813,814 for electricity
Pool unit is fixedly connected.In certain embodiments, the first linking arm 84 with PTC units junction near have contraction flow region 82.
When the first linking arm 84 is formed as tabular, the contraction flow region 82 has the width smaller than stem portion 81, and from stem portion
81 extend to contraction flow region 82 via changeover portion 83, and the changeover portion 83 can as shown in FIG. into concave arc shape.The contraction flow region 82
Presence can improve current sensitivity near PTC units 7, sensitiveness of the enhancing PTC units to electric current.In some embodiments
In, the width of serrated end is can adjust to adjust the current sensitivity of PTC units.In an alternative embodiment, the master of the first linking arm
Cadre 81 and contraction flow region 82 also may be selected other shapes, such as cylindric etc..In an alternative embodiment, connection end can be one,
Three, four or other quantity.In certain embodiments, the first linking arm 84 is made of conductive material, such as copper etc..
Similarly, the second linking arm 88 includes stem portion 85 and one or more connections extended from stem portion 85
End, is in the illustrated embodiment two connection ends 851,853.In certain embodiments, stem portion 85 is essentially tabular, and
Each connection end 851,853 can be substantially perpendicular to the extension of the ground of stem portion 85, or carry out bending by flat extension
To form each connection end 851,853.Each connection end 851,853 can respectively have mounting hole 852,854 for battery
Unit is fixedly connected.In certain embodiments, the second linking arm 88 with PTC units junction near have contraction flow region 87.
When second linking arm 88 is formed as tabular, the contraction flow region 87 has the width smaller than stem portion 85, and from stem portion 85
Contraction flow region 87 is extended to via changeover portion 86, the changeover portion 86 can as shown in FIG. into concave arc shape.
In certain embodiments, PTC units 7 are formed as sheet, and can have different thickness.The PTC unit bags of sheet
Include the narrow end surface (mark) of first surface 71 and the second surface 72 relative with first surface 71 and surrounding.First connection
Arm 84 is connected to the first surface 71 of PTC units 7 and the second linking arm 88 is connected on the second surface 72 of PTC units 7.
In some embodiments, can by the contraction flow region 87 of the linking arm 88 of contraction flow region 82 and second of the first linking arm 84 come with sheet
The apparent surface 71,72 of PTC units 7 connects.In certain embodiments, the first linking arm 84 and the second linking arm 88 are by welding
To be connected to PTC units 7.The current sensitivity of PTC units 7 is further increased by the PTC units 7 of sheet.The reality of diagram
The substantially rectangular sheet of PTC units 7 in example is applied, PTC units can be in disc-shaped or other shapes in an alternative embodiment.In addition,
In an alternative embodiment, can also from the PTC units of other shapes, and the first linking arm and the second linking arm can also other
Mode is connected to PTC units, for example, be connected on the homonymy of PTC units or two end faces are first-class.
With reference to Fig. 3 and Fig. 4, in certain embodiments, in the region 10 near PTC units 7, PTC units 7 and with
Coating treatment is carried out on first linking arm part of its connection and the surface of the second linking arm part, the coating can be insulated heat
Coating.On the one hand insulated heat coating plays insulating effect, and on the other hand, insulated heat coating prevents PTC units 7 from quickly dissipating
Heat, enables its PTC unit 7 to keep the high-impedance state of certain hour, until load declines and electric current stabilization.In some embodiments
In, the time that PTC units 7 keep high-impedance state can be adjusted by adjusting the material or thickness degree of such as painting.In some embodiments
In, the first linking arm 84 and the second linking arm 88 are enclosed with insulating part 11.In one embodiment, each connection end 811,
812,851 and 853 have wrapped up insulator cap 12.
In further embodiments, the utility model additionally provides a kind of overload guarantor of electrokinetic cell for electric automobile
Protecting system, the overload protective device includes being connected to one or more PTC units between battery unit, such as using institute above
The busbar component of the band PTC units stated.In certain embodiments, overload protective device also includes the fuse protection based on resistance wire
System and the overload current-limiting protection system based on battery management system.
Existing overload protective device generally includes to be based on the fuse protection system of resistance wire and based on battery management system
The overload current-limiting protection system of system.For the electric control system based on BMS, BMS passes through monitoring cell temperature and loop
Electric current, feeds back to full-vehicle control unit, then sends instructions to electric machine controller reduction load by calculating by full-vehicle control unit,
Whole control is controlled by software, and process tedious are susceptible to misjudge and judge by accident, and whole control is by controlling external load
To realize current limliting, electrokinetic cell does not overload current-limiting protection in itself.Overload protection based on electric control may be in extreme condition
, there is potential safety hazard in lower failure.
For electrokinetic cell fuse protection system, generally realized in one fuse box of main loop design extreme
Protection in the case of high current, directly fusing easily causes arcing to fuse, and is easily caused during running at high speed suddenly
Run out of steam completely, produce serious personal security hidden danger.It is irrecoverable after blown fuse, will fuse vehicle in front is changed
Cannot travel.
The utility model provides the overload protection of many weights for electrokinetic cell, and it can be between molten based on resistance wire
Break between protection system and the overload current-limiting protection system based on battery management system, or protected as the overload for acting on first
Shield.Can be to control method, the physical parameter of PTC units and fusing unit is adjusted, and realizes more perfect overload protection side
Case.The temperature resistance curve of PTC units can for example be configured so that the overload protective device based on PTC units can be set
Worked into after current-limiting protection thrashing is overloaded.Specifically, raised in electric current and reach I0When, the overload limit based on BMS
Stream protection system works first；And when the overload current-limiting protection based on BMS is failed, I is continued to rise in electric current1Afterwards, base
Worked in the overload protection of PTC units, i.e., PTC units show high-impedance state to limit electric current.Due to the mistake based on PTC units
It is the overload protection of physical property to carry protection, and it is not based on electricity or software control, therefore it has stability and safety higher
Property, will not generally fail.Therefore, or even in extreme circumstances will not also cause blown fuse, but fuse protection system
The presence of system forms the bottom line of overload protection so that whole overload protective device is more perfect.In certain embodiments, cell tube
Reason system BMS monitors the instant resistance of PTC units by the voltage at PTC units two ends of sampling.Additionally, having in electrokinetic cell
In the embodiment of multiple busbar components with PTC, can be to the size of the PTC units of each busbar component, the characteristic such as material is carried out
Set so that each PTC unit has different temperature resistance curves, to realize multi-level overload protection.
With reference to Fig. 5, it illustrates the schematic diagram of the electrokinetic cell according to embodiment of the present utility model.Electrokinetic cell includes
Multiple battery cells 2, each battery cell 2 may include the battery unit of such as 6 or so.Can at interval of two battery cells 2
One busbar component 1 with PTC units of arrangement, this outdoor electrical busbar 3 electrically connects between being arranged on battery cell 2 for common
Connect.Additionally, electrokinetic cell also includes busbar bundle assembly 4 and the power output busbar 5,6 for being connected to load.
In a further embodiment, the utility model additionally provides a kind of overload protection side of the electrokinetic cell of automobile
Method, methods described includes to be connected on according to the busbar component of embodiment of the present utility model the electricity of the electrokinetic cell for automobile
Between pool unit.
In a further embodiment, the utility model is additionally provided with the busbar according to embodiment of the present utility model
Automobile of component, such as pure electric vehicle or hybrid electric vehicle etc..
It will be appreciated that though in the motor of each embodiment of the present utility model, the various pieces difference of stator module
Limited by stator body and formed parts, for example, stator body defines closing inner ring, teeth portion and outer ring, formed parts are limited
Lid, but in an alternative embodiment, in the case where structure is not changed, the part for limiting different piece can change, such as stator
The closing inner ring of component, outer ring or teeth portion can be limited by formed parts or miscellaneous part, and the lid of stator module can be by stator sheet
Body or miscellaneous part are limited.
Claims (14)
1. the busbar component of a kind of electrokinetic cell for automobile, it includes：
First linking arm, first linking arm has one or more connection ends, to be connected with upstream battery unit；
Second linking arm, second linking arm has one or more connection ends, to be connected with downstream battery unit；And
It is connected to the PTC units between first linking arm and second linking arm.
2. busbar component according to claim 1, it is characterised in that the PTC units in the form of sheets, first linking arm
It is respectively connecting on the opposite face of the PTC units with second linking arm.
3. busbar component according to claim 1, it is characterised in that first linking arm and second linking arm point
It is not soldered on the PTC units.
4. busbar component according to claim 1, it is characterised in that first linking arm and/or second connection
Arm with the PTC units junction near have contraction flow region.
5. busbar component according to claim 1, it is characterised in that first linking arm and second linking arm with
And the PTC units are coated with insulated heat coating near junction.
6. busbar component according to claim 1, it is characterised in that first linking arm and/or second connection
Arm includes stem portion and one or more connection ends extended from the stem portion, and the connection end is used for and battery unit
Connection, and with mounting hole.
7. busbar component according to claim 6, it is characterised in that the stem portion is wrapped up and the company by insulating part
End is connect to be wrapped up by insulation sleeve.
8. the overload protective device of a kind of electrokinetic cell for automobile, it is characterised in that the overload protective device includes base
In the overload protective device of PTC units, the overload protective device based on PTC units includes being connected to one between battery unit
Individual or multiple PTC units.
9. overload protective device according to claim 8, it is characterised in that one or more of PTC units are by such as
Busbar component described in claim 1-7 is connected between battery unit.
10. overload protective device according to claim 8, it is characterised in that the overload protective device also includes being based on
The fuse protection system of resistance wire and the overload current-limiting protection system based on battery management system.
11. overload protective devices according to claim 10, it is characterised in that the overload protective device is arranged so that
The overload protective device based on PTC units is prior to or subsequent to the overload current-limiting protection system based on battery management system
Work.
12. overload protective devices according to claim 10, it is characterised in that the battery management system is by sampling
The voltage at PTC units two ends monitors the instant resistance of the PTC.
13. a kind of power battery assemblys for automobile, it is characterised in that the power battery assembly includes multiple battery units
And one or more the PTC units with the multiple battery cells in series.
14. power battery assemblys according to claim 13, it is characterised in that one or more of PTC units pass through
Busbar component as described in claim 1-7 is connected between battery unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621064256.XU CN206225447U (en) | 2016-09-20 | 2016-09-20 | Busbar component, electrokinetic cell overload protective device and power battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621064256.XU CN206225447U (en) | 2016-09-20 | 2016-09-20 | Busbar component, electrokinetic cell overload protective device and power battery assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206225447U true CN206225447U (en) | 2017-06-06 |
Family
ID=58782204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621064256.XU Active CN206225447U (en) | 2016-09-20 | 2016-09-20 | Busbar component, electrokinetic cell overload protective device and power battery assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN206225447U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229453A (en) * | 2016-09-20 | 2016-12-14 | 蔚来汽车有限公司 | Busbar assembly, electrokinetic cell overload protective device and method and power battery assembly |
| CN107425320A (en) * | 2017-08-29 | 2017-12-01 | 浙江赛英电力科技有限公司 | For welding the composite bus bar structure of electric capacity |
| CN109841974A (en) * | 2017-11-29 | 2019-06-04 | 肖特股份有限公司 | Feedthrough component with strap |
| CN112490595A (en) * | 2020-11-06 | 2021-03-12 | 欣旺达电动汽车电池有限公司 | Electric connection assembly, battery and electric equipment |
-
2016
- 2016-09-20 CN CN201621064256.XU patent/CN206225447U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229453A (en) * | 2016-09-20 | 2016-12-14 | 蔚来汽车有限公司 | Busbar assembly, electrokinetic cell overload protective device and method and power battery assembly |
| WO2018054126A1 (en) * | 2016-09-20 | 2018-03-29 | 蔚来汽车有限公司 | Busbar component, power battery overload protection system and method, and power battery component |
| US10461376B2 (en) | 2016-09-20 | 2019-10-29 | Nio Nextev Limited | Bus-bar assembly, power battery over-load protection system and method, and power battery assembly |
| CN106229453B (en) * | 2016-09-20 | 2019-12-03 | 蔚来汽车有限公司 | Busbar component, power battery overload protective device and method and power battery assembly |
| CN107425320A (en) * | 2017-08-29 | 2017-12-01 | 浙江赛英电力科技有限公司 | For welding the composite bus bar structure of electric capacity |
| CN109841974A (en) * | 2017-11-29 | 2019-06-04 | 肖特股份有限公司 | Feedthrough component with strap |
| US11071220B2 (en) | 2017-11-29 | 2021-07-20 | Schott Ag | Feedthrough with flat conductor |
| CN109841974B (en) * | 2017-11-29 | 2022-01-11 | 肖特股份有限公司 | Feedthrough with flat conductors |
| CN112490595A (en) * | 2020-11-06 | 2021-03-12 | 欣旺达电动汽车电池有限公司 | Electric connection assembly, battery and electric equipment |
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Effective date of registration: 20200810 Address after: Susong Road West and Shenzhen Road North, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Weilai (Anhui) Holding Co., Ltd Address before: Room 502, Minsheng Bank Building, 12 Cecil Harcourt Road, central, Hongkong, China Patentee before: NIO NEXTEV Ltd. |