CN106601940A - Power battery top cover structure, power battery and battery module - Google Patents
Power battery top cover structure, power battery and battery module Download PDFInfo
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- CN106601940A CN106601940A CN201710010684.7A CN201710010684A CN106601940A CN 106601940 A CN106601940 A CN 106601940A CN 201710010684 A CN201710010684 A CN 201710010684A CN 106601940 A CN106601940 A CN 106601940A
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- contiguous block
- connecting portion
- electrode component
- power battery
- top cover
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 230000010485 coping Effects 0.000 claims description 80
- 238000005452 bending Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 27
- 238000010586 diagram Methods 0.000 description 24
- 230000000994 depressogenic effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000010261 cell growth Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to an energy storage device field especially relates to a power battery top cap structure, power battery and battery module include the top cap piece, first electrode subassembly, second electrode subassembly, flexible electric connection piece of second and second connecting block, the flexible electric connection piece of second has second electrode subassembly connecting portion, second deformation portion and second connecting block connecting portion, second electrode subassembly connecting portion are connected with second electrode subassembly electricity, second connecting block connecting portion are connected with the second connecting block electricity, second electrode subassembly connecting portion and second connecting block connecting portion are connected to the second deformation portion, the second connecting block can take place the displacement for second electrode subassembly. The power battery comprises the power battery top cover structure. The battery module comprises a bus bar and a plurality of power batteries, and the plurality of second connecting blocks are electrically connected through the bus bar. The power battery top cover structure provided by the application can enable the second connecting block to displace relative to the second electrode assembly under the action of external force.
Description
Technical field
The application is related to energy storage device field, more particularly to a kind of top cover structure of power battery, electrokinetic cell and battery mould
Group.
Background technology
For electric motor car, the distance travelled improved by car, there are several improved procedures：
1st, improve the energy density of battery；
2nd, in the space availability ratio for improving battery bag and battery modules, limited space interior energy accommodates higher volume of electricity
Pond.
For at present, industry generally uses duricrust battery, it is contemplated that battery in use cell expansion to electricity
The impact of the aspect such as pond service life and safety, most of module group assembling are all that big face is close under a certain pressure admittedly in the big face of battery
It is scheduled on together.Then connected by Busbar (bus-bar) between pole.And battery, in charge and discharge process, battery can produce swollen
Swollen or contraction, corresponding pole and Busbar can stress.This is accomplished by Busbar or pole can deform.
And it is thick to consider that conveyance capacity Busbar is made comparison, is substantially all in 2～3mm, realize being easily deformed, just
" Ω " shape is made, there is higher arching upward centre.So, for same module space, due to the part that Busbar arches upward
Larger space can be taken in short transverse, the reduction that battery can utilize space is thus resulted in.
The content of the invention
This application provides a kind of top cover structure of power battery, electrokinetic cell and battery modules, can solve the problem that above-mentioned asking
Topic.
The first aspect of the embodiment of the present application provides a kind of top cover structure of power battery, including coping plate, first electrode
Component, second electrode component, the second flexible electrical connection and the second contiguous block,
The first electrode component is electrically connected with the coping plate, the second electrode component seal with the coping plate and
Electric insulation,
Second contiguous block is located at the top of the second electrode component, and second contiguous block is soft by described second
Property electrical connector electrically connect with the second electrode component, second flexible electrical connection possess second electrode component connection
Portion, second variant part the second contiguous block connecting portion, the second electrode component connecting portion are electrically connected with the second electrode component,
The second contiguous block connecting portion is electrically connected with second contiguous block, and second variant part connects the second electrode component
Connecting portion and the second contiguous block connecting portion,
Second contiguous block can be subjected to displacement relative to the second electrode component under external force, and described
Second contiguous block connecting portion can be moved together with second contiguous block, and pulls second variant part to deform upon.
Preferably, orthogonal X-axis, Y-axis and Z axis, the length of the coping plate are included in three-dimensional cartesian coordinate system
Direction is X-axis, and width is Y-axis, and thickness direction is Z axis,
Second variant part possesses at least one second kinks, second kink X/Y plane, YZ planes with
And it is projected as bending structure in XZ plane thrins.
Preferably, second flexible electrical connection is laminated structure, and the projection of second kink is located
Plane with formed the projection second kink thickness direction it is parallel.
Preferably, second variant part possesses second connecting portion and two second kinks,
One of them described second kink is projected as bending structure in YZ planes, another described second kink
Bending structure is projected as in the XZ planes, two second kinks are connected by the second connecting portion.
Preferably, the second electrode component includes insulating part on the second pole, the second electrode column sealing part and second,
Second pole passes through the coping plate, and exhausted with coping plate sealing by the second electrode column sealing part
Edge connects, and on described second, insulating part is located between second contiguous block and the coping plate, and the second electrode component connects
Socket part is electrically connected with second pole.
Preferably, the second contiguous block connecting portion is electrically connected with the lower surface or upper surface of second contiguous block.
Preferably, there is the second connecting hole or the second breach, the second contiguous block connecting portion on second contiguous block
Electrically connect through second connecting hole or the second breach with the upper surface of second contiguous block.
Preferably, the upper surface of second contiguous block has the second link slot, the second contiguous block connecting portion and institute
The electrical connection of the second link slot is stated, the upper surface of the second contiguous block connecting portion is less than the upper surface of second contiguous block.
Preferably, second flexible electrical connection includes some flexible connection pieces, and some flexible connection pieces are successively
It is stacked, and is at least mutually permanently connected in end positions.
The second aspect of the embodiment of the present application provides a kind of electrokinetic cell, including described top cover structure of power battery.
The third aspect of the embodiment of the present application provides a kind of battery modules, including bus-bar and multiple described power
Battery, is electrically connected by the bus-bar between multiple second contiguous blocks.
Preferably, the bus-bar is straight panel structure, and the upper surface of second contiguous block is fitted with the bus-bar company
Connect.
The technical scheme that the embodiment of the present application is provided can reach following beneficial effect：
The top cover structure of power battery provided by the embodiment of the present application can make the second contiguous block relative under external force
It is subjected to displacement in second electrode component, and carries out relative displacement to absorb the active force and bus-bar between, therefore the application
The top cover structure of power battery provided by embodiment can utilize straight panel structure bus-bar carry out electrokinetic cell series connection or
Parallel connection, improves the space availability ratio of battery modules.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Application.
Description of the drawings
The overlooking the structure diagram of the top cover structure of power battery that Fig. 1 is provided by the embodiment of the present application one；
The configuration schematic diagram of the first top cover structure of power battery that Fig. 2 is provided by the embodiment of the present application one；
Fig. 3 is the cross section structure diagram of the top cover structure of power battery A-A along Fig. 1 shown in Fig. 2；
The configuration schematic diagram of second top cover structure of power battery that Fig. 4 is provided by the embodiment of the present application one；
Fig. 5 is the cross section structure diagram of the top cover structure of power battery A-A along Fig. 1 shown in Fig. 4；
Fig. 6 is the cross section structure diagram of the top cover structure of power battery B-B along Fig. 1 shown in Fig. 4；
Fig. 7 is the cross section structure diagram of the top cover structure of power battery C-C along Fig. 1 shown in Fig. 4；
The configuration schematic diagram of the third top cover structure of power battery that Fig. 8 is provided by the embodiment of the present application one；
Fig. 9 is the cross section structure diagram of the top cover structure of power battery A-A along Fig. 1 shown in Fig. 8；
Figure 10 is the cross section structure diagram of the top cover structure of power battery B-B along Fig. 1 shown in Fig. 8；
Figure 11 is the cross section structure diagram of the top cover structure of power battery C-C along Fig. 1 shown in Fig. 8；
The configuration schematic diagram of the 4th kind of top cover structure of power battery that Figure 12 is provided by the embodiment of the present application one；
Figure 13 is the cross section structure diagram of the top cover structure of power battery A-A along Fig. 1 shown in Figure 12；
The configuration schematic diagram of the 5th kind of top cover structure of power battery that Figure 14 is provided by the embodiment of the present application one；
The first the first flexible electrical connection/the second flexible electrical connection that Figure 15 is provided by the embodiment of the present application one
Side structure schematic view；
The side structure schematic view of second first flexible electrical connections that Figure 16 is provided by the embodiment of the present application one；
Figure 17 is in first electrode component using the top cover structure of power battery of the first flexible electrical connection shown in Figure 16
The partial sectional view of the neighbouring A-A along Fig. 1；
The side structure schematic view of the third the first flexible electrical connection that Figure 18 is provided by the embodiment of the present application one；
Figure 19 is in first electrode component using the top cover structure of power battery of the first flexible electrical connection shown in Figure 18
The partial sectional view of the neighbouring A-A along Fig. 1；
The 4th kind of first flexible electrical connection/the second flexible electrical connection that Figure 20 is provided by the embodiment of the present application one
Side structure schematic view；
Figure 21 is in first electrode component using the top cover structure of power battery of the first flexible electrical connection shown in Figure 20
The partial sectional view of the neighbouring A-A along Fig. 1；
Figure 22 is in first electrode component using the top cover structure of power battery of the first flexible electrical connection shown in Figure 20
The partial sectional view of the neighbouring B-B along Fig. 1；
The overlooking the structure diagram of the first top cover structure of power battery that Figure 23 is provided by the embodiment of the present application two；
The configuration schematic diagram of the first top cover structure of power battery that Figure 24 is provided by the embodiment of the present application two；
Figure 25 is the cross section structure diagram of the top cover structure of power battery A-A along Figure 23 shown in Figure 24；
The overlooking the structure diagram of second top cover structure of power battery that Figure 26 is provided by the embodiment of the present application two；
The configuration schematic diagram of second top cover structure of power battery that Figure 27 is provided by the embodiment of the present application two；
Figure 28 is the cross section structure diagram of the top cover structure of power battery A-A along Figure 26 shown in Figure 27；
A kind of knot of first flexible electrical connection/the second flexible electrical connection that Figure 29 is provided by the embodiment of the present application two
Structure schematic diagram；
A kind of overlooking the structure diagram of top cover structure of power battery that Figure 30 is provided by the embodiment of the present application three；
A kind of configuration schematic diagram of top cover structure of power battery that Figure 31 is provided by the embodiment of the present application three；
Figure 32 is the cross section structure diagram of the top cover structure of power battery A-A along Figure 30 shown in Figure 31.
Reference：
10- first electrode components；
The first poles of 100-；
101- conducting strips；
102- the first electrode column sealing parts；
First time insulating part of 103-；
The first electrical connectors of 104-；
105- rotating sheets；
Insulating part on 106- first；
The first accommodating chambers of 11-；
The first flexible electrical connections of 12-；
120- first electrode component connecting portions；
120a- first electrodes component aids in connecting portion；
122- the first contiguous block connecting portions；
The first contiguous blocks of 122a- aid in connecting portion；
124th, the first kink of 124a, 124b-；
126- first connecting portions；
The first extensions of 128-；
The first contiguous blocks of 14-；
The first connecting holes of 140-；
The first link slots of 142-；
144- the first spacing auxiliary section/the first spacing holes；
146- stop parts；
148- relief portion；
The first locating parts of 16-；
The first limited posts of 160-；
Coordinate section under 160a-；
Coordinate section on 160b-；
The first limited caps of 162-；
The first annular spaces of 164-；
The second annular spaces of 166-；
The first elastic components of 18-；
180- the first radial elastic parts；
The first axial elastic components of 182-；
20- second electrode components；
The second poles of 200-；
202- the second electrode column sealing parts；
Second time insulating part of 203-；
Insulating part on 206- second；
The second accommodating chambers of 21-；
The second flexible electrical connections of 22-；
220- second electrode component connecting portions；
220a- second electrodes component aids in connecting portion；
222- the second contiguous block connecting portions；
The second contiguous blocks of 222a- aid in connecting portion；
224th, the second kink of 224a, 224b-；
226- second connecting portions；
The second contiguous blocks of 24-；
The second connecting holes of 240-；
The second link slots of 242-；
The second spacing auxiliary sections of 244-；
The second locating parts of 26-；
The second limited posts of 260-；
The second limited caps of 262-；
The second elastic components of 28-；
280- the second radial elastic parts；
282- the second axial elasticity parts；
30- coping plates；
300- rotating sheet connecting holes.
During accompanying drawing herein is merged in description and the part of this specification is constituted, show the enforcement for meeting the application
Example, and be used for explaining the principle of the application together with description.
Specific embodiment
Below by specific embodiment and combine accompanying drawing the application is described in further detail.Described in text
"front", "rear", "left", "right", " on ", D score with the top cover structure of power battery in accompanying drawing as reference.
Embodiment one
As shown in Fig. 1 to 22, the embodiment of the present application defines orthogonal X-axis, Y-axis in three-dimensional cartesian coordinate system first
And Z axis, the embodiment of the present application provides a kind of top cover structure of power battery, including first electrode component 10, the first flexible electrical
Connector 12, the first contiguous block 14, second electrode component 20, the second flexible electrical connection 22, the second contiguous block 24 and top cover
Piece 30.The length direction of coping plate 30 is X-axis, and width is Y-axis, and thickness direction is Z axis.
It is one extremely defeated that first electrode component 10, the first flexible electrical connection 12 and the first contiguous block 14 are responsible for electrokinetic cell
Go out, and second electrode component 20, the second flexible electrical connection 22 and the second contiguous block 24 are responsible for the another extremely defeated of electrokinetic cell
Go out.In the present embodiment, the positive pole of electrokinetic cell is connected with first electrode component 10, the connection electrokinetic cell of second electrode component 20
It is described as a example by negative pole, but it is emphasized that in other embodiments, first electrode component 10 and second electrode component 20
Connecting object mutually can also exchange.It should be noted that first electrode component 10 described below and second electrode
The self structure of component 20 can also be accordingly exchanged according to the exchange of its connecting object.
In the present embodiment, first electrode component 10 is tightly connected with coping plate 30, in case leak-stopping liquid, at the same time, the
Can insulate between one electrode assemblie 10 and coping plate 30 connection, can also be electrically connected, when first electrode component 10 connects
During the positive pole of electrokinetic cell, first electrode component 10 is electrically connected with coping plate 30 and just can make 30 positively charged of coping plate, is prevented
Only coping plate 30 is corroded.Second electrode component 20 is electrically insulated with coping plate 30, in case the both positive and negative polarity of stopping power battery is directly led
It is logical, it is also required to be sealed of course for leakage is prevented.
In the present embodiment, the first contiguous block 14 is located at the top of first electrode component 10, used as being connected with bus-bar
Part.Wherein, the position of the first contiguous block 14 is not fixed, but can move in certain amplitude.And first is soft
Property electrical connector 12 then be used for ensure still make first electrode component 10 after the position of the first contiguous block 14 changes
Between the first contiguous block 14 realize conducting.
As shown in Fig. 6,10,16 to 22, the first flexible electrical connection 12 possesses first electrode component connecting portion 120, first
Contiguous block connecting portion 122 and the first variant part (non-label in figure), first electrode component 10 and first electrode component connecting portion
120 electrical connections, the first contiguous block 14 are electrically connected with the first contiguous block connecting portion 122, the first variant part connection first electrode component
Connecting portion 120 and the first contiguous block connecting portion 122.First variant part possesses dough deformation ability, can send out under external force
Raw deformation.
When multiple electrokinetic cells using this top cover structure of power battery constitute battery modules, can be same by bus-bar
When be fitted and connected with the upper surface of multiple first contiguous blocks 14, as the first contiguous block 14 is fixed together with bus-bar,
Bus-bar adopts on-deformable straight panel structure, therefore now the first contiguous block 14 is fixed, when electrokinetic cell occurs
During expansion, if using prior art top cover structure of power battery (between first electrode component 10 and the first contiguous block 14 not
Relative displacement can be produced), as the increase of expansive force can be in weak area (such as in the connection of bus-bar and the first contiguous block 14
Place) there is fracture so that and electrokinetic cell can not be exported.And the top cover structure of power battery of the embodiment of the present application is adopted, due to
Relative displacement can occur between one contiguous block 14 and first electrode component 10, when electrokinetic cell is expanded, which is not interfered with yet
Output.
The thing on the basis of coping plate 30, when the first contiguous block 14 occurs relative displacement relative to coping plate 30, due to the
One contiguous block connecting portion 122 is linked together with the first contiguous block 14, therefore the first contiguous block connecting portion 122 can follow the first company
Connect block 14 to move together, and now first electrode component 10 is fixed, therefore first electrode group relative to coping plate 30
Part connecting portion 120 is also maintained static, so allow for first electrode component connecting portion 120 and the first contiguous block connecting portion 122 it
Between there occurs relative displacement, and the deformation that the side-play amount of relative displacement will pass through the first variant part is absorbed and is supplemented, it is to avoid
First flexible electrical connection 12 directly ruptures and loses conductive capability.
Often will be by larger electric current, in order to ensure conveyance capacity, the first flexible electrical connection in electrokinetic cell use
12 generally require and possess larger area of passage, and excessive area of passage can cause the three-dimensional chi of the first flexible electrical connection 12
It is very little excessive, it is unfavorable for deforming upon, therefore, in order that the first flexible electrical connection 12 is smoothly deformed upon, the first flexibility is electrically connected
At least in a dimension, the size of (such as thickness) is smaller for fitting 12, to be curved deformation.
First variant part typically is provided with least one first kinks 124, according to the required direction for carrying out deformation, first
Kink 124 can be projected as bending structure in X/Y plane, YZ planes and the XZ plane thrins.Specifically, for example certain
One the first kink 124 is projected as bending structure in X/Y plane, then first kink 124 can be produced along X-axis
And the deformation quantity of Y-axis.In the same manner, the shape for being projected as bending structure, just can producing along Y-axis and Z axis in the YZ planes
Variable, the deformation quantity for being projected as bending structure, just can producing along X-axis and Z axis in XZ planes.Should be noted
It is, if projection of first kink 124 in X/Y plane is in bending structure, in order to possess larger area of passage, first
Kink 124 just needs to have larger size in Z-direction, can so take substantial amounts of space.
It can thus be seen that first kink 124 is generally possible to guarantee the deformation quantity of two dimensions of generation, but will
Realize any movement of first contiguous block 14 in three-dimensional system of coordinate, it is necessary to which the first variant part simultaneously can be along X-axis, Y-axis and Z
Axle produces deformation quantity, so if first kink 124 is only relied on, or then the first flexible electrical connection 12 also has which
Its deformation structure, or making this first variant part while deformation quantity can be produced along X-axis, Y-axis and Z axis.
For one (the first flexible electrical connection 12 also has other deformation structures), it may be considered that flexible using first
The mode that electrical connector 12 itself occurs twisting obtains the deformation quantity in the 3rd dimension.However, this twisting can produce it is larger
Tear edge, may make between first electrode component connecting portion 120 and first electrode component 10, or the first contiguous block connecting portion
122 and first there is tear phenomenon between contiguous block 14, weaken bonding strength, even wholly interrupted connection.By increasing by first
Flexibility be electrically connected part 12 the first kink 124 quantity, the torsion of the first flexible electrical connection 12 can be increased to a certain extent
Kinetic force (referring to Figure 16 to 19), while can also increase the deformability of the first flexible electrical connection 12.
(the first variant part can produce deformation quantity along X-axis, Y-axis and Z axis simultaneously) both for the, generally requires first
Being sized in third dimension of kink 124 is less, for example, the first kink 124 is designed to thread or strip, with
It is easy to the first kink 124 that bending is also carried out in third dimension.However, on the one hand this design can cause the first flexibility to be electrically connected
12 self-strength of fitting is reduced, and on the other hand, the area of passage that will also result in the first flexible electrical connection 12 is too small, resistance mistake
Height, has the risk being blown.
Therefore, as shown in figure 20, the first flexible electrical connection 12 is overall adopts laminated structure, meanwhile, the first variant part tool
Standby first connecting portion 126 and two first kinks 124a, 124b, the two first kink 124a, 124b are not respectively
Projection in same plane is in bending structure, also, the bending structure formed by first kink 124a, 124b projects what is be located
The thickness direction of plane and first kink 124a, 124b itself is parallel, so as to realize the deformation quantity in three dimensions.Tool
Body ground, the first kink 124a are projected as bending structure in XZ planes, meanwhile, the thickness direction of the first kink 124a with
The change of shape of the first kink and change, but all the time parallel to XZ planes, and the first kink 124b is in YZ planes
Be projected as bending structure, meanwhile, the thickness direction of the first kink 124b is all the time parallel to YZ directions.First kink
124a, 124b are connected with first connecting portion 126 by one end, first electrode component connecting portion 120 and the first kink 124a
It is connected away from one end of first connecting portion 126, the first contiguous block connecting portion 122 and the first kink 124b are away from first connecting portion
126 one end is connected.
So, when the first contiguous block 14 occurs the displacement of X-direction, the first kink 124a can produce deformation, when
When first contiguous block 14 occurs the displacement of Y direction, the first kink 124b can be deformed upon, when the first contiguous block 14 occurs
During the displacement of Z-direction, first kink 124a, 124b can be deformed upon simultaneously.
In the present embodiment, the first flexible electrical connection 12 can be made using a monoblock sheet material, it would however also be possible to employ very thin
Some flexible connection pieces stack gradually to be formed, no matter using which kind of mode, the gross thickness of the first flexible electrical connection 12 is best
It is maintained in the range of 0.1～1mm, preferred scope is 0.2～0.6mm.These flexible connection pieces are at least mutually solid in end positions
It is fixed to connect, and mid portion, the part of the first kink 124a is particularly in, each other can be with independent activities, to improve
The deformability of the first flexible electrical connection 12.
In the present embodiment, due to the present embodiment in the first flexible electrical connection 12 and be not involved in first electrode component 10
With being tightly connected for coping plate 30, therefore the deformation of the first flexible electrical connection 12 does not interfere with the sealing property of coping plate 30.
First electrode component 10 and coping plate 30 are sealed the mode for electrically connecting many kinds, recommends following in the present embodiment
Several ways.
Mode one, as shown in Figures 2 and 3, directly will be first electrode component 10 integrally disposed with coping plate 30, for example, profit
First electrode component 10 is formed on coping plate 30 with punching press or other processing technique.Due to first electrode component 10 and coping plate
30 is one, therefore, it is possible to the problem for being fully solved sealing and electrically connect, while this mode greatly can also simplify
Assembly technology simultaneously reduces the space shared by first electrode component 10.Now, first electrode component 10 is only needed to possess and uses first
Pole 100, and without the need for other parts.
Mode two, first electrode component 10 include the first pole 100, the first electrode column sealing part 102 and the first electrical connection
Part 104, the first pole 100 pass through coping plate 30, and are tightly connected with coping plate 30 by the first electrode column sealing part 102, first
Pole 100 is electrically connected with coping plate 30 by the first electrical connector 104, makes 30 positively charged of coping plate, meanwhile, first electrode component
Connecting portion 120 is electrically connected with the first pole 100.First electrical connector 104 may be located at the top of coping plate 30, it is also possible to be located at
The lower section of coping plate 30, generally, is that directly contact is electrically connected between the first electrical connector 104 and coping plate 30.
As shown in Figure 4 and Figure 5, the first electrical connector 104 is located at the lower section of coping plate 30, and in the first pole 100
Between the lower surface of bottom and coping plate 30, so as to the bottom of the first pole 100 is electrically connected with the lower surface of coping plate 30.This
When, the first connection can be made by insulating part 106 on first be arranged between the first contiguous block 14 and coping plate 30
Block 14 is insulated with coping plate 30, while reserving the assembly space of the first flexible electrical connection 12.
Again as shown in Figure 8 and Figure 9, the first electrical connector 104 is located at the top of coping plate 30, more specifically positioned at top cover
Between piece 30 and the first contiguous block 14, the first pole 100 is also cross coping plate 30 and the first electrical connector 104, now,
The contacts side surfaces of one electrical connector 104 and the first pole 100 are simultaneously electrically connected, first electrode component connecting portion 120 and the first pole
100 top electrical connection.
Additionally, when the first electrical connector 104 is located at 30 top of coping plate, the first electrical connector 104 possibly by
First flexible electrical connection 12, first contiguous block 14 etc. are electrically connected indirectly with the first pole 100.For example, make the first pole
100 pass through and the first electrical connector 104 but directly do not electrically connect, first electrode component connecting portion 120 and the first pole 100
Contact electrical connection, the first contiguous block connecting portion 122 contact electrical connection with the first contiguous block 14, the first electrical connector 104 and meanwhile with
Coping plate 30 and the first contiguous block 14 are contacted and are electrically connected so that the first electrical connector 104 by the first contiguous block 14 with
And first flexible electrical connection 12 electrically connected with the first pole 100 indirectly.
Electrokinetic cell can form the drift bolt circuit through coping plate 30 and first electrode component 10 in the case of drift bolt,
If the resistance in drift bolt circuit is too small, the electric current in drift bolt circuit is excessive, and drift bolt point is easily struck sparks, and causes battery core out of control,
Therefore, during drift bolt, need to access a big resistance in drift bolt circuit.Therefore, it can the first electrical connector 104 in mode two
The resistance unit of resistance larger (1～100000 Ω) is designed as, resistance in increasing circuit is played, reduces the effect of electric current.
When the first electrical connector 104 is located at the lower section of coping plate 30, actually namely positioned at the inside of electrokinetic cell,
Since it is considered that reducing volume, the first electrical connector 104 can be in the form of resistance bolck.And when the first electrical connector 104
When the top of coping plate 30, then conductive plastic can be adopted, on the one hand the first flexible electrical connection 12 of protection, on the other hand
For the mobile offer buffering of the first contiguous block 14.
In such scheme, in order to prevent the bottom of the first pole 100 and 30 directly contact of coping plate and by resistive short,
First time insulating part 103 can be arranged to be insulated between the bottom of the first pole 100 and the lower surface of coping plate 30.
The problem of overcharging is likely to be encountered during electrokinetic cell use, overcharging can cause to heat up and make inside electrokinetic cell
Pressure rises, and causes electrokinetic cell blast on fire.In order to avoid this problem, can also be to first electrode component 10 in the present embodiment
And coping plate 30 is optimized design, as shown in Figure 12 to 14, now first electrode component 10 includes conducting strip 101, first
Lower insulating part 103, the first electrical connector 104 and rotating sheet 105, are provided with a rotating sheet connecting hole on coping plate 30
300, the sealing rotating sheet of rotating sheet 105 connecting hole 300, first time insulating part 103 is located at the lower section of coping plate 30, and and coping plate
30 are connected, conducting strip 101 by first time insulating part 103 and the insulation fixation of coping plate 30, at the same time, conducting strip 30 also with turn over
Rotor 105 is electrically connected.First electrical connector 104 is located at the top of coping plate 30, and covers rotating sheet connecting hole 300, and first is electric
Connector 104 is electrically connected with coping plate 30, and first electrode component connecting portion 120 is electrically connected with the first electrical connector 104.
The electricity of power battery anode is exported by conducting strip 101, is delivered to coping plate 30 through rotating sheet 105 afterwards, then
First electrical connector 104 is delivered to by coping plate 30, finally the first contiguous block is delivered to through the first flexible electrical connection 12 again
14.And when electrokinetic cell internal pressure exceedes reference pressure, rotating sheet 105 can overturn and disconnect the electricity with conducting strip 101
Connection, so as to the transport path for causing positive pole interrupts, releases the overcharging state of electrokinetic cell.In order to ensure that rotating sheet 105 can
The electrical connection with conducting strip 101 is smoothly overturn and disconnected, on conducting strip 101, weak area is preferably provided with, when rotating sheet 105 overturns
When, weak area can be ruptured due to stress concentration, so that turning on rotating sheet 105 is smooth.
In the present embodiment, as shown in Figure 16 to 19, the first contiguous block connecting portion 122 can with the first contiguous block 14 under
Surface connects, for example, first accommodating chamber 11 is surrounded between the first contiguous block 14 and first electrode component 10, and first is flexible
Electrical connector 12 is placed in the first accommodating chamber 11.
However, the volume and structure of the first flexible electrical connection 12 are needed by the first accommodating chamber 11 in said structure
Restriction, it is thus possible to affect the mobile range of the first contiguous block 14.Now can be set by the lower surface in the first contiguous block 14
Put relief portion 148 mode extend the space of the first accommodating chamber 11 (referring to Figure 17,19), but due to the first contiguous block 14 itself
Finite thickness, therefore the depth of relief portion 148 is not too large, at most can only also run through the first contiguous block 14, accommodate for first
The spatial spread in chamber 11 is limited in one's ability.
As shown in Fig. 1 to 14,20 to 22, in the present embodiment, it is also possible to which the first contiguous block connecting portion 122 and first is connected
Connect block 14 upper surface electrical connection, that is to say, that the first flexible electrical connection 12 some can stretch out first electrode component
10 and first region between contiguous block 14, therefore the first flexible electrical connection 12 can possess bigger size and more
Complicated structure such that it is able to adapt to the movement by a larger margin of the first contiguous block 14.
As shown in Fig. 8 to 11 and Figure 14, in order that the first contiguous block connecting portion 122 can smoothly arrive at the first contiguous block
14 upper surface, can be provided with the first connecting hole 140 on the first contiguous block 14, and the first contiguous block connecting portion 122 passes through first
Electrically connect with the upper surface of the first contiguous block 14 after connecting hole 140.As shown in Fig. 1 to 7,12 to 13,20 to 22, the first contiguous block
Connecting portion 122 also can by the lower section of the first contiguous block 14 via the first contiguous block 14 side around to the first contiguous block 14 upper table
Face, and electrically connect with the upper surface of the first contiguous block 14.
If directly making the first contiguous block connecting portion 122 by the side of the first contiguous block 14 around to the upper of the first contiguous block 14
Surface, may cause outside a part first contiguous block 14 of protrusion of the first flexible electrical connection 12, and this part is highly susceptible to
External action and damage.In this regard, can be optimized to the structure of the first contiguous block 14 so as to form internally recessed in side
The first breach (non-label in figure), the first flexible electrical connection 12 can bypass the first contiguous block 14 by first breach, from
Outside protruding from the first contiguous block 14, and then obtain good protection.In order to save space and improve the whole of entirety
Clean property, the first breach and the first flexible electrical connection 12 are preferably profile-followed.
It is attached with bus-bar for the ease of the first contiguous block 14, the upper surface of the first contiguous block 14 is preferably maintained in flat
It is whole, therefore, first link slot 142 is preferably provided with the upper surface of the first contiguous block 14, when the first contiguous block connecting portion 122
When being connected with the upper surface of the first contiguous block 14, the first contiguous block connecting portion 122 is electrically connected with the first link slot 142, so that
Upper surface of the upper surface of the first contiguous block connecting portion 122 less than the first contiguous block 14.First link slot 142 is connected with first
Block connecting portion 122 is preferably profile-followed.
In the present embodiment, the second contiguous block 24 is located at the top of second electrode component 20, also serves as being connected with bus-bar
The part for connecing.The bus-bar being connected with the second contiguous block 24 is also adopted by straight panel structure, and when electrokinetic cell is expanded, second connects
It is fixed to connect the position between block 24 and bus-bar.And in order to prevent because the second contiguous block 24 is with the expansion of electrokinetic cell
And be subjected to displacement, there is fracture so as to cause the weak area between the second contiguous block 24 and bus-bar, profit in the embodiment of the present application
Connect second electrode component 20 and the second contiguous block 24 with the second flexible electrical connection 22 so that the second contiguous block 24 and the
Relative position between two electrode assemblies 20 can change, defeated so as to which is not interfered with when electrokinetic cell is expanded yet
Go out.
It is continuing with referring to Fig. 1 to 22, similar with the structure of the first flexible electrical connection 12, the second flexible electrical connection 22
Possess second electrode component connecting portion 220, the second contiguous block connecting portion 222 and the second variant part (non-label in figure), second
Electrode assemblie 20 is electrically connected with second electrode component connecting portion 220, and the second contiguous block 24 is electrically connected with the second contiguous block connecting portion 222
Connect.Second variant part possesses dough deformation ability, can deform upon under external force.
When multiple electrokinetic cells using this top cover structure of power battery constitute battery modules, equally can be by confluxing
Row is fitted and connected with the upper surface of multiple second contiguous blocks 24 simultaneously, when electrokinetic cell is expanded, second electrode component 20
Can also be subjected to displacement, and as the second contiguous block 24 is linked together with bus-bar, therefore the second contiguous block 24 is to maintain static
, this allows for that relative displacement also occurs between the second contiguous block 24 and second electrode component 20.
The thing on the basis of coping plate 30, when the second contiguous block 24 occurs relative displacement relative to coping plate 30, due to the
Two contiguous block connecting portions 222 are linked together with the second contiguous block 24, therefore the second contiguous block connecting portion 222 can follow the second company
Connect block 24 to move together, and now second electrode component 20 is fixed, therefore second electrode group relative to coping plate 30
Part connecting portion 220 is also maintained static, so allow for second electrode component connecting portion 220 and the second contiguous block connecting portion 222 it
Between there occurs relative displacement, and the deformation that the side-play amount of relative displacement will pass through the second variant part is absorbed and is supplemented, it is to avoid
Second flexible electrical connection 22 directly ruptures and loses conductive capability.
In order to reduce resistance, the second flexible electrical connection 22 is generally required possesses larger area of passage, and excessive mistake
Flow area can cause the three-dimensional dimension of the second flexible electrical connection 22 excessive, be unfavorable for deforming upon, therefore, in order that second is soft
Property electrical connector 22 smoothly deform upon, the second flexible electrical connection 22 at least in a dimension (such as thickness) size will
It is smaller, to be curved deformation.
Identical with the first flexible electrical connection 12, the second flexible electrical connection 22 can also adopt laminated structure, while the
Two variant parts can also possess the second kink 224 and second connecting portion 226, also, the quantity of the second kink 224, set
Put mode and function can also be designed with reference to the first kink 124, for example, the second kink 224a and second is set
Kink 224b.In the present embodiment, the second flexible electrical connection 22 can be made using a monoblock sheet material, it would however also be possible to employ very
Thin some flexible connection pieces stack gradually to be formed, and will not be described here.
The second flexible electrical connection 22 in due to the present embodiment also and is not involved in second electrode component 20 and coping plate 30
Be tightly connected, therefore the deformation of the second flexible electrical connection 22 does not interfere with the sealing property of coping plate 30 yet.
In the present embodiment, second electrode component 20 is included on the second pole 200, the second electrode column sealing part 202 and second
Insulating part 206, the second pole 200 pass through coping plate 30, and are connected by the second electrode column sealing part 202 and 30 sealed insulation of coping plate
Connect, on second, insulating part 206 is located between the second contiguous block 24 and coping plate 30, it is ensured that the second contiguous block 24 and coping plate 30 it
Between electric insulation, second electrode component connecting portion 220 electrically connected with the second pole 200.It is also possible in the second pole 200
Bottom and the lower surface of coping plate 30 between arrange second time insulating part 203 insulated.
With as the first flexible electrical connection 12, the second contiguous block connecting portion 222 of the second flexible electrical connection 22 can be with
Be connected with the lower surface of the second contiguous block 24, for example, one second is surrounded between the second contiguous block 24 and second electrode component 20
Accommodating chamber 21, the second flexible electrical connection 22 are placed in the second accommodating chamber 21.
It is also possible to the second contiguous block connecting portion 222 is electrically connected with the upper surface of the second contiguous block 24, such as
Set second connecting hole 240 on two contiguous blocks 24, the second contiguous block connecting portion 222 is through after the second connecting hole 140 with second
The upper surface electrical connection of contiguous block 24.Or, the second contiguous block connecting portion 222 is connected via second by the lower section of the second contiguous block 24
The upper surface of the side of block 24 around to the second contiguous block 24 is connect, and is electrically connected with the upper surface of the second contiguous block 24.In order to protect
Second flexible electrical connection 22, can also arrange the second breach (non-label in figure) in the sidepiece of the second contiguous block 24, its setting
Mode is identical with the first breach on the first contiguous block 14 with function.
It is attached with bus-bar for the ease of the second contiguous block 24, the upper surface of the second contiguous block 24 is preferably maintained in flat
It is whole, preferably also there is second link slot 242, the second contiguous block connecting portion 222 and the in the upper surface of the second contiguous block 14
Two link slots 242 are electrically connected, so that upper table of the upper surface of the second contiguous block connecting portion 222 less than the second contiguous block 24
Face.
The present embodiment passes through the first flexible electrical connection 12 and the flexible connection of the second flexible electrical connection 22 first connects
Block 14 and the second contiguous block 24, can make the first contiguous block 14 and the second contiguous block on the premise of status of electrically connecting is kept
24 along X-axis, Y-axis and Z axis obtain certain amplitude displacements, and then preferably absorb because cell expansion and absorb institute caused by and
Active force between bus-bar.
Embodiment two
Embodiments herein two has carried out structure improvement on the basis of embodiment one.In embodiment one, although the
One contiguous block 14 possesses locomotivity, but if the amount of movement of the first contiguous block 14 has exceeded the first flexible electrical connection 12
Deformability, then the first flexible electrical connection 12 be just likely to occur fracture, or depart from and the first contiguous block 14 and first
The status of electrically connecting of electrode assemblie 10, regardless of whether there is that situation, can cause the first contiguous block 14 cannot again with power current
The positive pole connection in pond.Likewise, the second contiguous block 24 there is also the probability that this thing happens, therefore, it is necessary to first
The concrete mobile range of contiguous block 14 and the second contiguous block 24 is limited so as to can only be moved in rational scope
It is dynamic.
In order to solve the above problems, as shown in Figure 23 to 25, the top cover structure of power battery provided by the present embodiment is except tool
Outside the structure of standby embodiment one, the first locating part 16 and the second locating part 26 are also equipped with.It is provided with first contiguous block 14
First spacing auxiliary section 144, the first spacing auxiliary section 144 can be connected with the first locating part 16, and the two is in connection
Can mutually restrict afterwards, enable the first locating part 16 to limit the movement of the first spacing auxiliary section 144.Due to the first contiguous block
Connecting portion 122 is electrically connected with the first contiguous block 14, and the two moves together, and limits the first spacing auxiliary section
144, also imply that the amount of movement of the first contiguous block 14 is limited.
As shown in figure 24, the first spacing auxiliary section 144 is the first spacing hole (in order to make it easy to understand, hereafter continuing to use accompanying drawing mark
144), the first locating part 16 includes the first limited post 160 and the first limited cap 162 to note, and the first limited post 160 is relative to top cover
Piece 30 is fixedly installed, for example, be directly anchored on coping plate 30, or is fixed on the first electrical connector of first electrode component 10
On 104 or first on insulating part 106, that is to say, that the first limited post 160 is adapted to the various structures in the middle of embodiment one
First electrode component 10, is not limited solely to the first electrode component 10 comprising conducting strip 101 and rotating sheet 105.First is spacing
Cap 162 is located at side of first contiguous block 14 away from coping plate 30, and the first limited post 160 is along Z axis through after the first spacing hole 144
It is fixedly connected by riveting, welding or alternate manner with the first limited cap 162, the first limited post 160 and the first limited cap
162 can limit movement of first contiguous block 14 along Z-direction.
As insulating part 106 is generally individually made up of insulation plastic cement on first, therefore can be by the first locating part 16 and first
Upper insulating part 106 is integrally formed, efficiency of assembling is improved, on the first locating part 16 and first, insulating part 106 can be identical material
Matter can also be different materials.
Here the mode for limiting the movement of the first spacing hole 144 is broadly divided into two classes, and the first kind is the first spacing hole 144 along X
The movement of axle, Y-axis, that is, moving radially relative to the first limited post 160, Equations of The Second Kind are the first spacing holes 144 along Z-direction
Movement, that is, relative to the axial movement of the first limited post 160.As needed, the first locating part 16 can be entirely limited
Firmly the first spacing hole 144 one type movement (for example make the movement that the first spacing hole 144 can not carry out along X-axis, Y-axis completely,
Or the movement that can not carry out along Z axis completely), while allowing the first spacing hole 144 to carry out the another kind of movement of certain amplitude.When
So, it is desirable to make the first spacing hole 144 that the movement of certain amplitude can be carried out in tri- dimensions of XYZ.
Specifically, for first kind move mode, the diameter of the first spacing hole 144 is needed more than the first limited post 160
Diameter, can form the first annular space 164, between the first spacing hole 144 and the first limited post 160 due to the first annular space 164
Exist, the first spacing hole 144 just can be moved along the radial direction of the first limited post 160, and mobile amplitude is equal to the first limit
Position hole 144 and the radial dimension of difference of the first limited post 160, so as to realize that limiting the first spacing hole 144 along XY directions moves
The purpose of amount.
For Equations of The Second Kind move mode, can be using in larger-size first limited post of Z-direction 160 in the present embodiment
Coordinate in less first spacing hole 144 of Z-direction, the first spacing hole 144 is entered along the axial direction of the first limited post 160
Row movement, at the same time, as one end of the first limited post 160 is fixed, and the other end fixes the first limited cap 162, because
This first contiguous block 14 actually just cannot depart from the first limited post 160, and be merely able to the axial dimension in the first limited post 160
In the range of move.
As shown in figure 25, it is contemplated that the smooth sex chromosome mosaicism of 14 upper surface of the first contiguous block, the present embodiment is by the first limited cap
142 are located in the first spacing hole 144, while stop part 146 is set in the first spacing hole 144, for stopping the first limited cap
142 depart from the first spacing hole 144 by lower section.As the first limited cap 142 is located in the first spacing hole 144, therefore first spacing
The upper surface of cap 142 can be less than the upper surface of the first contiguous block 14.
If only arranging a set of first locating part 16 and the first spacing auxiliary section 144, possibly the first company cannot be limited
Connect block 14 to be rotated in X/Y plane, and if while arrange multiple first locating parts 16, while on the first contiguous block 14
Multiple first spacing auxiliary sections 144 are provided with, the first locating part 16 is connected with the first spacing auxiliary section 144 one by one, just can
This problem is enough solved, makes the first contiguous block 14 also restrained in the rotation in X/Y plane.
The quantity of the first locating part 16 and the first spacing auxiliary section 144 is preferably even number, such as two, is symmetrically distributed in
First flexible electrical connection 12 is along the both sides of X-axis, if first is formed between first electrode component 10 and the first contiguous block 14 held
Receive chamber 11, then the first locating part 16 also can be arranged directly with respect to the first accommodating chamber 11.As the length direction of coping plate 30 is
Along X-direction, therefore space in the X-axis direction is more abundant, so on the one hand can avoid the first flexible electrical connection 12,
On the other hand also the first flexible electrical connection 12 can be formed and is protected.
In electric energy transmitting procedure, the meeting persistent fever of the first flexible electrical connection 12, if these heats can not dissipate in time
Send out, then the first flexible electrical connection 12 may be caused overheated or even fusing, in order to avoid this problem, as shown in figure 29, can be with
First extension 128 is set on the first flexible electrical connection 12, and the first extension 128 is located at first electrode component connecting portion
120 and first between contiguous block connecting portion 122, and as shown in Figure 26 to 28, in assembling process, as first is spacing, 16 along X-axis
The both sides of the first flexible electrical connection 12 are arranged on, therefore in order to avoid the first locating part 16, the first flexible electrical connection 12
At least a portion stretches out the first accommodating chamber 11 along Y-axis, and the first extension 128 is just located at the portion stretched out outside the first accommodating chamber 11
Point, and extend along X-axis, to increase area of dissipation, improve radiating efficiency.
If also, the first variant part possess in XZ planes be projected as bending structure the first kink 124a when, extremely
Rare one the first kink 124a is stretched out outside the first accommodating chamber 11, and now the first extension 128 with stretch out first
Accommodate the first kink 124a connections outside front 11.So design is not only able to increase radiating surface using the first extension 128
Product, while the intensity of kink can also be improved.
However, for whole first flexible electrical connection 12, its overall conveyance capacity depends on the first contiguous block
Connecting portion 122, the independent conveyance capacity of 120 this each part of the first variant part and first electrode component connecting portion, which
Part conveyance capacity is too low to cause the first flexible electrical connection 12 to be blown.Therefore, in the present embodiment, in order to improve
The overall conveyance capacity of one flexible electrical connection 12, is also equipped with the first contiguous block auxiliary on the first contiguous block connecting portion 122 and connects
Socket part 122a, while first electrode component auxiliary connecting portion 120a is also equipped with first electrode component connecting portion 120,
First contiguous block auxiliary connecting portion 122a can extend to the sidepiece of the first extension 128, to increase first
The contact area of contiguous block connecting portion 122 and the first contiguous block 14, likewise, first electrode component auxiliary connecting portion 120a also can
The sidepiece of the first extension 128 is extended to, for increasing 120 contact with first electrode component 10 of first electrode component connecting portion
Area.After contact area increase, just can strengthen conveyance capacity.
In order to protect the first extension 128, the first breach of 14 sidepiece of the first contiguous block can by the first kink 124 with
And first extension 128 accommodate together.
Continuing with referring to Figure 26 to 29, in the present embodiment, the structure and function of the second locating part 26 are limited with first
Position part 16 is similar, it may include the second limited post 260 and the second limited cap 262, and dependence is arranged on the second contiguous block 24
The second spacing auxiliary section 244 (such as the second spacing hole) displacement amplitude for being coordinated to limit the second contiguous block 24.Second
Locating part 26 can be fixed on coping plate 30 as the first locating part 16, it is also possible to be fixed on various structures in embodiment one
Second electrode component 20 second on insulating part 206.At the same time, second electrode component 20 can also with second on insulate
Part 206 is integrally formed.In addition, the second flexible electrical connection 22 in the present embodiment can also possess the second extension 228
Radiated, and aid in connecting portion 220a and the second contiguous block to aid in connecting portion 222a to improve second by second electrode component
The overall conveyance capacity of flexible electrical connection 22, the set-up mode of dependency structure are identical with the first flexible electrical connection 12, here
Repeat no more.
Embodiment three
Embodiments herein three has carried out structure improvement on the basis of embodiment two.In embodiment one and embodiment
In two, the first contiguous block 14 and the second contiguous block 24 can carry out displacement relative to coping plate 30, but, first is being connected
Connect block 14 and when the second contiguous block 24 is attached with bus-bar, if 24 equal energy of the first contiguous block 14 and the second contiguous block
It is enough arbitrarily mobile, it will to cause assembling trouble.
In order to solve the above problems, as shown in Figure 30 to 32, the top cover structure of power battery provided by the present embodiment is except tool
Outside the structure of standby embodiment two, the first elastic component 18 and the second elastic component 28 are also equipped with.First elastic component 18 and second
The effect of elastic component 28 is that occur when the first contiguous block 14 and the second contiguous block 24 are moved relative to coping plate 30
Elastic deformation, and external force revocation after resilience, and promote while resilience the first contiguous block 14 and the second contiguous block 24 to
Position before movement is turned back, so as to ensure that the first contiguous block 14 and the second contiguous block 24 can have substantially stationary position to be used for
Assembling.
Specifically, as shown in figure 30, the first elastic component 18 includes the first radial elastic part 180 and the first axial elastic component
182, in 180 embedded first annular space 164 of the first radial elastic part, and can be in the first contiguous block 14 under external force along X-axis
Or Y-axis is deformed when moving.In order to prevent the first radial elastic part 180 from departing from the first spacing hole 144, this reality by lower section
Can be stopped using 146 pairs of the first radial elastic parts 180 of stop part in applying example, that is to say, that in assembling, by the first footpath
It is arranged between stop part 146 and the first limited cap 162 to elastic component 180.Now, preferably ensure the first limited cap 142
Upper surface of the upper surface less than the first contiguous block 14.The structure of stop part 146 can adopt limited block form, it is preferred to use ring
Shape baffle plate.
With continued reference to Figure 30, the first axial elastic component 182 is arranged at the lower section of the first contiguous block 14, for example, be arranged on first
Between contiguous block 14 and coping plate 30, or it is arranged between the first contiguous block 14 and first electrode component 10.When the first connection
When block 14 is moved down along Z axis under external force, the first axial elastic component 182 can be compressed, and after external force revocation, the
One contiguous block 14 can be by the first axial elastic component 182 jack-up upwards, until being limited by the first limited cap 162.Now, first
Contiguous block 14 is limited by contrary both direction by the first limited cap 162 and the first axial elastic component 182.
First axial elastic component 182 can be arranged on the optional position below the first contiguous block 14, only it is noted that avoiding which
Its part, however, it is contemplated that saving space, and is easy to assembling, and the first axial elastic component 182 is set in first preferably
On limited post 160.Also, also one can be arranged on insulating part 106 on coping plate 30, the first electrical connector 104 or first
First depressed part (non-label in figure), the bottom of the first limited post 160 is fixed in the first depressed part, and with the first depressed part it
Between form the second annular space 166, by the first axial elastic component 182 embedded second annular space 166, to reduce the first axial elastic component
182 in the space shared by Z-direction, while make the upper surface of the first axial elastic component 182 beyond the first depressed part, with the
One contiguous block 14 is contacted and provides active force.
In the present embodiment, as shown in figure 31, the first limited post 160 can include lower cooperation section 160a and upper cooperation section
160b, the diameter with diameter greater than upper cooperation section 160b of lower cooperation section 160a, the first axial elastic component 182 are set in lower cooperation section
On 160a, and the first radial elastic part 180 is then set in cooperation section 160b.Thicker lower cooperation section 160a can improve
The structural strength and bonding strength of one limited post 160, and the first limited block 14 mainly passes through upper along the movement of X-axis and Y-axis
Section 160b is coordinated to be limited, therefore, the less upper mobile range for coordinating section 160b to be conducive to the first contiguous block 14 of raising.
First radial elastic part 180 and the first axial elastic component 182 can take various forms, such as around the first limit
Position post 160 arranges a circle and serves as the first radial elastic part 180 along the spring for radially extending of the first limited post 160, arranges one and encloses
Serve as the first axial elastic component 182 along the axially extending spring of the first locating part 160.But the assembly difficulty of this mode compared with
Greatly, and poor reliability.Therefore, in the present embodiment, the first radial elastic part 180 and the first axial elastic component 182 are recommended to adopt
With the circulus by made by elastomeric material.
Likewise, the structure and function of the second elastic component 28 in the present embodiment are similar with the first elastic component 18,
The second radial elastic part 280 and the second axial elasticity part 282 can be included, and according to the set location of the second limited post 260,
Second depressed part can be set on insulating part 206 on coping plate 30 or second, and the bottom of the second limited post 260 is fixed on
In two depressed parts, the second axial elasticity part 282 is embedded between the second depressed part and the second limited post 260, to reduce the second axle
To elastic component 282 in the space shared by Z-direction, while making the upper surface of the second axial elasticity part 282 beyond the second depression
Portion, to contact and provide active force with the second contiguous block 24.Also, the second limited post 260 can also be spacing using similar first
The two-part structure of post 160 will not be described here with reaching identical technique effect.
The top cover structure of power battery provided by the embodiment of the present application enters can the first contiguous block and the second contiguous block
Row relative displacement is absorbing the active force and bus-bar between, while the first contiguous block and the second contiguous block can also be limited
Displacement amplitude, and the first contiguous block and the second contiguous block can be made in its natural state to return to initial position.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations, any modification, equivalent substitution and improvements made based on the application
Deng should be included within the protection domain of the application.
Claims (12)
1. a kind of top cover structure of power battery, it is characterised in that including coping plate, first electrode component, second electrode component,
Two flexible electrical connections and the second contiguous block,
The first electrode component is electrically connected with the coping plate, and the second electrode component is sealed with the coping plate and electricity is exhausted
Edge,
Second contiguous block is located at the top of the second electrode component, and second contiguous block is by second flexible electrical
Connector is electrically connected with the second electrode component, second flexible electrical connection possess second electrode component connecting portion,
Two variant part the second contiguous block connecting portions, the second electrode component connecting portion is electrically connected with the second electrode component, described
Second contiguous block connecting portion is electrically connected with second contiguous block, and second variant part connects the second electrode component connection
Portion and the second contiguous block connecting portion,
Second contiguous block can be subjected to displacement relative to the second electrode component under external force, and described second
Contiguous block connecting portion can be moved together with second contiguous block, and pulls second variant part to deform upon.
2. top cover structure of power battery as claimed in claim 1, it is characterised in that include mutually hanging down in three-dimensional cartesian coordinate system
Straight X-axis, Y-axis and Z axis, the length direction of the coping plate is X-axis, and width is Y-axis, and thickness direction is Z axis,
Second variant part possesses at least one second kinks, and second kink is in X/Y plane, YZ planes and XZ
Bending structure is projected as in plane thrin.
3. top cover structure of power battery as claimed in claim 2, it is characterised in that second flexible electrical connection is lamellar
Structure, and the thickness side of the projection of second kink plane being located and second kink for forming the projection
To parallel.
4. top cover structure of power battery as claimed in claim 3, it is characterised in that second variant part possesses the second connection
Portion and two second kinks,
One of them described second kink is projected as bending structure in YZ planes, and another described second kink is in XZ
It is projected as bending structure in plane, two second kinks are connected by the second connecting portion.
5. the top cover structure of power battery as described in any one of Claims 1-4, it is characterised in that the second electrode component
Including insulating part on the second pole, the second electrode column sealing part and second,
Second pole passes through the coping plate, and is connected with the coping plate sealed insulation by the second electrode column sealing part
Connect, on described second, insulating part is located between second contiguous block and the coping plate, the second electrode component connecting portion
Electrically connect with second pole.
6. the top cover structure of power battery as described in any one of Claims 1-4, it is characterised in that second contiguous block connects
Socket part is electrically connected with the lower surface or upper surface of second contiguous block.
7. top cover structure of power battery as claimed in claim 6, it is characterised in that connect with second on second contiguous block
Hole or the second breach are connect, the second contiguous block connecting portion passes through second connecting hole or the second breach to be connected with described second
The upper surface electrical connection of block.
8. top cover structure of power battery as claimed in claim 6, it is characterised in that the upper surface of second contiguous block has
Second link slot, the second contiguous block connecting portion are electrically connected with second link slot, the second contiguous block connecting portion
Upper surface of the upper surface less than second contiguous block.
9. the top cover structure of power battery as described in claim 3 or 4, it is characterised in that the second flexible electrical connection bag
Containing some flexible connection pieces, some flexible connection pieces are cascading, and are at least mutually permanently connected in end positions.
10. a kind of electrokinetic cell, it is characterised in that including the top cover structure of power battery described in any one of claim 1 to 9.
11. a kind of battery modules, it is characterised in that including the electrokinetic cell described in bus-bar and multiple claim 10, many
Electrically connected by the bus-bar between individual second contiguous block.
12. battery modules as claimed in claim 11, it is characterised in that the bus-bar is straight panel structure, and described second connects
The upper surface and the bus-bar for connecing block is fitted and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710010684.7A CN106601940B (en) | 2017-01-06 | 2017-01-06 | Power battery top cover structure, power battery and battery module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710010684.7A CN106601940B (en) | 2017-01-06 | 2017-01-06 | Power battery top cover structure, power battery and battery module |
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| Publication Number | Publication Date |
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| CN106601940A true CN106601940A (en) | 2017-04-26 |
| CN106601940B CN106601940B (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018126438A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure, power battery and battery module |
| WO2019148662A1 (en) * | 2018-02-01 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Cap assembly of secondary battery, and secondary battery |
| WO2019153459A1 (en) * | 2018-02-12 | 2019-08-15 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN111029488A (en) * | 2019-08-14 | 2020-04-17 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN111029489A (en) * | 2019-08-14 | 2020-04-17 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN112909437A (en) * | 2018-07-23 | 2021-06-04 | 宁德时代新能源科技股份有限公司 | Sampling assembly and battery module |
| CN116190900A (en) * | 2023-04-28 | 2023-05-30 | 宁德时代新能源科技股份有限公司 | Fixed bolster, battery and consumer |
| WO2023198220A1 (en) * | 2022-04-12 | 2023-10-19 | 浙江极氪智能科技有限公司 | Power battery cover plate and power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018126438A1 (en) * | 2017-01-06 | 2018-07-12 | 宁德时代新能源科技股份有限公司 | Power battery top cover structure, power battery and battery module |
| WO2019148662A1 (en) * | 2018-02-01 | 2019-08-08 | 宁德时代新能源科技股份有限公司 | Cap assembly of secondary battery, and secondary battery |
| WO2019153459A1 (en) * | 2018-02-12 | 2019-08-15 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN112909437A (en) * | 2018-07-23 | 2021-06-04 | 宁德时代新能源科技股份有限公司 | Sampling assembly and battery module |
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| CN111029489A (en) * | 2019-08-14 | 2020-04-17 | 宁德时代新能源科技股份有限公司 | Secondary battery |
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| WO2021027775A1 (en) * | 2019-08-14 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN111029488B (en) * | 2019-08-14 | 2021-07-30 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2023198220A1 (en) * | 2022-04-12 | 2023-10-19 | 浙江极氪智能科技有限公司 | Power battery cover plate and power battery |
| CN116190900A (en) * | 2023-04-28 | 2023-05-30 | 宁德时代新能源科技股份有限公司 | Fixed bolster, battery and consumer |
| CN116190900B (en) * | 2023-04-28 | 2023-09-22 | 宁德时代新能源科技股份有限公司 | Fixed bolster, battery and consumer |
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| CN106601940B (en) | 2019-10-22 |
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