CN106601940B - Power battery top cover structure, power battery and battery module - Google Patents
Power battery top cover structure, power battery and battery module Download PDFInfo
- Publication number
- CN106601940B CN106601940B CN201710010684.7A CN201710010684A CN106601940B CN 106601940 B CN106601940 B CN 106601940B CN 201710010684 A CN201710010684 A CN 201710010684A CN 106601940 B CN106601940 B CN 106601940B
- Authority
- CN
- China
- Prior art keywords
- link block
- power battery
- electrode component
- interconnecting piece
- top cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 230000010485 coping Effects 0.000 claims description 80
- 238000005452 bending Methods 0.000 claims description 73
- 238000007789 sealing Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000010261 cell growth Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
- 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
Landscapes
- 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
This application involves energy storage device field more particularly to a kind of top cover structure of power battery, power battery and battery mould
Group.
Background technique
For electric vehicle, the mileage travelled of Yao Tigao car, there are several improved procedures:
1, the energy density of battery is improved；
2, higher volume of electricity can be accommodated in the space utilization rate for improving battery pack and battery modules, limited space
Pond.
At present for, what industry generallyd use is hard shell battery, it is contemplated that battery in use cell expansion to electricity
The influence of pond service life and safety etc., it is solid under a certain pressure that most of module group assembling is all that big face is close in the big face of battery
It is scheduled on together.Then it is connected between pole by Busbar (busbar connector).And battery, in charge and discharge process, battery can generate swollen
Swollen or contraction, corresponding pole and Busbar can stress.This just needs Busbar or pole that can deform.
And in view of to be all made comparison thick by conveyance capacity Busbar, it is substantially all and is easily deformed in 2~3mm, Yao Shixian, just
It is made into " Ω " shape, there be higher arch upward in centre.In this way, for same mould group space, the part arched upward due to Busbar
Larger space can be occupied in short transverse, thus causes battery can be using the reduction in space.
Summary of the invention
This application provides a kind of top cover structure of power battery, power battery and battery modules, it is able to solve above-mentioned ask
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 link block,
The first electrode component is electrically connected with the coping plate, the second electrode component and the coping plate seal and
Electrical isolation,
Second link block is located at the top of the second electrode component, and second link block is soft by described second
Property electrical connector be electrically connected with the second electrode component, second flexible electrical connection have second electrode component connection
Portion, the second variant part and the second link block interconnecting piece, the second electrode component interconnecting piece and second electrode component electricity
Connection, the second link block interconnecting piece are electrically connected with second link block, the second variant part connection second electricity
Pole component interconnecting piece and the second link block interconnecting piece,
Second link block can be subjected to displacement under external force relative to the second electrode component, and described
Second link block interconnecting piece can be moved together with second link block, and pull second variant part deformation occurs.
It preferably, include orthogonal X-axis, Y-axis and Z axis, the length of the coping plate in three-dimensional cartesian coordinate system
Direction is X-axis, and width direction is Y-axis, and thickness direction is Z axis,
Second variant part has at least one second bending part, second bending part X/Y plane, YZ plane with
And bending structure is projected as in XZ plane thrin.
Preferably, second flexible electrical connection is laminated structure, and where the projection of second bending part
Plane with formed the thickness direction of second bending part of the projection it is parallel.
Preferably, second variant part has second connecting portion and two second bending parts,
One of them described second bending part is projected as bending structure in YZ plane, another described second bending part
It is projected as bending structure in XZ plane, two second bending parts 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 by the second electrode column sealing part and coping plate sealing
Edge connects, and between second link block and the coping plate, the second electrode component connects insulating part on described second
Socket part is electrically connected with second pole.
Preferably, the second link block interconnecting piece is electrically connected with the lower surface of second link block or upper surface.
Preferably, there is the second connecting hole or the second notch, the second link block interconnecting piece on second link block
It is electrically connected across second connecting hole or the second notch with the upper surface of second link block.
Preferably, the upper surface of second link block has the second link slot, the second link block interconnecting piece and institute
The electrical connection of the second link slot is stated, the upper surface of the second link block interconnecting piece is no more than the upper surface of second link block.
Preferably, second flexible electrical connection includes several flexible connection pieces, and several 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 power battery, including the top cover structure of power battery.
The third aspect of the embodiment of the present application provides a kind of battery modules, including busbar connector and multiple power
Battery is electrically connected between multiple second link blocks by the busbar connector.
Preferably, the busbar connector is straight panel structure, and the upper surface of second link block is bonded company with the busbar connector
It connects.
Technical solution provided by the embodiments of the present application can achieve it is following the utility model has the advantages that
Top cover structure of power battery provided by the embodiment of the present application can make the second link block opposite under external force
It is subjected to displacement in second electrode component, and carries out relative displacement to absorb the active force between busbar connector, therefore the application
Top cover structure of power battery provided by embodiment can using the busbar connector of straight panel structure carry out power battery series connection or
Parallel connection improves the space utilization rate of battery modules.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of top cover structure of power battery provided by the embodiment of the present application one；
Fig. 2 is the configuration schematic diagram of the first top cover structure of power battery provided by the embodiment of the present application one；
Fig. 3 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 2 A-A along Fig. 1；
Fig. 4 is the configuration schematic diagram of second of top cover structure of power battery provided by the embodiment of the present application one；
Fig. 5 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 4 A-A along Fig. 1；
Fig. 6 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 4 B-B along Fig. 1；
Fig. 7 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 4 C-C along Fig. 1；
Fig. 8 is the configuration schematic diagram of the third top cover structure of power battery provided by the embodiment of the present application one；
Fig. 9 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 8 A-A along Fig. 1；
Figure 10 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 8 B-B along Fig. 1；
Figure 11 is the schematic cross-sectional view of top cover structure of power battery shown in Fig. 8 C-C along Fig. 1；
Figure 12 is the configuration schematic diagram of the 4th kind of top cover structure of power battery provided by the embodiment of the present application one；
Figure 13 is the schematic cross-sectional view of top cover structure of power battery A-A along Fig. 1 shown in Figure 12；
Figure 14 is the configuration schematic diagram of the 5th kind of top cover structure of power battery provided by the embodiment of the present application one；
Figure 15 is the first first flexible electrical connection/second flexible electrical connection provided by the embodiment of the present application one
Side structure schematic view；
Figure 16 is the side structure schematic view of second of first flexible electrical connections provided by the embodiment of the present application one；
Figure 17 is the top cover structure of power battery using the first flexible electrical connection shown in Figure 16 in first electrode component
Nearby along Fig. 1 A-A partial sectional view；
Figure 18 is the side structure schematic view of the third the first flexible electrical connection provided by the embodiment of the present application one；
Figure 19 is the top cover structure of power battery using the first flexible electrical connection shown in Figure 18 in first electrode component
Nearby along Fig. 1 A-A partial sectional view；
Figure 20 is the 4th kind of the first flexible electrical connection/second flexible electrical connection provided by the embodiment of the present application one
Side structure schematic view；
Figure 21 is the top cover structure of power battery using the first flexible electrical connection shown in Figure 20 in first electrode component
Nearby along Fig. 1 A-A partial sectional view；
Figure 22 is the top cover structure of power battery using the first flexible electrical connection shown in Figure 20 in first electrode component
Nearby along Fig. 1 B-B partial sectional view；
Figure 23 is the overlooking structure diagram of the first top cover structure of power battery provided by the embodiment of the present application two；
Figure 24 is the configuration schematic diagram of the first top cover structure of power battery provided by the embodiment of the present application two；
Figure 25 is the schematic cross-sectional view of top cover structure of power battery A-A along Figure 23 shown in Figure 24；
Figure 26 is the overlooking structure diagram of second of top cover structure of power battery provided by the embodiment of the present application two；
Figure 27 is the configuration schematic diagram of second of top cover structure of power battery provided by the embodiment of the present application two；
Figure 28 is the schematic cross-sectional view of top cover structure of power battery A-A along Figure 26 shown in Figure 27；
Figure 29 is the first flexible electrical connection of one kind/second flexible electrical connection knot provided by the embodiment of the present application two
Structure schematic diagram；
Figure 30 is a kind of overlooking structure diagram of top cover structure of power battery provided by the embodiment of the present application three；
Figure 31 is a kind of configuration schematic diagram of top cover structure of power battery provided by the embodiment of the present application three；
Figure 32 is the schematic cross-sectional view of top cover structure of power battery A-A along Figure 30 shown in Figure 31.
Appended drawing reference:
10- first electrode component；
The first pole of 100-；
101- conductive sheet；
102- the first electrode column sealing part；
The lower insulating part of 103- first；
The first electrical connector of 104-；
105- rotating sheet；
Insulating part on 106- first；
The first accommodating chamber of 11-；
The first flexible electrical connection of 12-；
120- first electrode component interconnecting piece；
120a- first electrode component assists interconnecting piece；
122- the first link block interconnecting piece；
The first link block of 122a- assists interconnecting piece；
124, the first bending part of 124a, 124b-；
126- first connecting portion；
128- first extended portion；
The first link block of 14-；
The first connecting hole of 140-；
The first link slot of 142-；
The first spacing auxiliary section of 144-/the first limit hole；
146- blocking portion；
148- relief portion；
The first locating part of 16-；
The first limited post of 160-；
Cooperate section under 160a-；
Cooperate section on 160b-；
The first limited cap of 162-；
The first annular space of 164-；
The second annular space of 166-；
The first elastic component of 18-；
180- the first radial elastic part；
182- first axis elastic component；
20- second electrode component；
The second pole of 200-；
202- the second electrode column sealing part；
The lower insulating part of 203- second；
Insulating part on 206- second；
The second accommodating chamber of 21-；
The second flexible electrical connection of 22-；
220- second electrode component interconnecting piece；
220a- second electrode component assists interconnecting piece；
222- the second link block interconnecting piece；
The second link block of 222a- assists interconnecting piece；
224, the second bending part of 224a, 224b-；
226- second connecting portion；
The second link block of 24-；
The second connecting hole of 240-；
The second link slot of 242-；
The second spacing auxiliary section of 244-；
The second locating part of 26-；
The second limited post of 260-；
The second limited cap of 262-；
The second elastic component of 28-；
280- the second radial elastic part；
282- the second axial elasticity part；
30- coping plate；
300- rotating sheet connecting hole.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.It is described in text
"front", "rear", "left", "right", "upper", "lower" are using the top cover structure of power battery in attached 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 provide a kind of top cover structure of power battery, including first electrode component 10, the first flexible electrical
Connector 12, the first link block 14, second electrode component 20, the second flexible electrical connection 22, the second link block 24 and top cover
Piece 30.The length direction of coping plate 30 is X-axis, and width direction is Y-axis, and thickness direction is Z axis.
It is one extremely defeated to be responsible for power battery for first electrode component 10, the first flexible electrical connection 12 and the first link block 14
Out, and second electrode component 20, the second flexible electrical connection 22 and the second link block 24 are responsible for the another extremely defeated of power battery
Out.In the present embodiment, the anode of power battery is connected with first electrode component 10, second electrode component 20 connects power battery
It is described for cathode, but it needs to be emphasized that in other embodiments, first electrode component 10 and second electrode component 20
Connecting object can also mutually exchange.It should be noted that first electrode component 10 and second electrode described below
The self structure of component 20 can also accordingly be exchanged according to the exchange of its connecting object.
In the present embodiment, first electrode component 10 and coping plate 30 are tightly connected, to prevent leak-stopping liquid, at the same time, the
Can insulate connection between one electrode assembly 10 and coping plate 30, can also be electrically connected, when first electrode component 10 connects
When the anode of power battery, first electrode component 10 is electrically connected with coping plate 30 just can make coping plate 30 positively charged, prevent
Only coping plate 30 is corroded.Second electrode component 20 is electrically insulated with coping plate 30, and the positive and negative anodes to prevent stopping power battery are directly led
It is logical, of course for preventing leakage to be also required to be sealed.
In the present embodiment, the first link block 14 is located at the top of first electrode component 10, is connected as with busbar connector
Component.Wherein, it the position of the first link block 14 and is not fixed, but can be moved in certain amplitude.And first is soft
Property electrical connector 12 then be used to guarantee still make first electrode component 10 after the position of the first link block 14 changes
It realizes and conducts between the first link block 14.
As shown in Fig. 6,10,16 to 22, the first flexible electrical connection 12 has first electrode component interconnecting piece 120, first
Link block interconnecting piece 122 and the first variant part (unlabeled in figure), first electrode component 10 and first electrode component interconnecting piece
120 electrical connections, the first link block 14 are electrically connected with the first link block interconnecting piece 122, and the first variant part connects first electrode component
Interconnecting piece 120 and the first link block interconnecting piece 122.First variant part has dough deformation ability, can send out under external force
Raw deformation.
It, can be same by busbar connector when multiple power batteries using this top cover structure of power battery form battery modules
When be fitted and connected with the upper surfaces of multiple first link blocks 14, since the first link block 14 is fixed together with busbar connector,
Busbar connector use on-deformable straight panel structure, therefore at this time the first link block 14 be it is fixed, when power battery occur
When expansion, if using the prior art top cover structure of power battery (between first electrode component 10 and the first link block 14 not
Can produce relative displacement), as the increase of expansive force can be in weak area (such as the connection in busbar connector and the first link block 14
Place) it is broken, prevent power battery is from exporting.And the top cover structure of power battery of the embodiment of the present application is used, due to the
Relative displacement can occur between one link block 14 and first electrode component 10, it will not be influenced when power battery expands
Output.
With coping plate 30 for benchmark object, when relative to coping plate 30 relative displacement occurs for the first link block 14, due to the
One link block interconnecting piece 122 links together with the first link block 14, therefore the first link block interconnecting piece 122 can follow the first company
It connects block 14 to move together, and first electrode component 10 relative to coping plate 30 is fixed at this time, therefore first electrode group
Part interconnecting piece 120 is also fixed, allow in this way first electrode component interconnecting piece 120 and the first link block interconnecting piece 122 it
Between relative displacement has occurred, and the deformation that the offset of relative displacement will pass through the first variant part is absorbed and is supplemented, and is avoided
First flexible electrical connection 12 is directly broken and loses conductive capability.
It often will be by biggish electric current, in order to guarantee conveyance capacity, the first flexible electrical connection in power battery use
12 generally require and have biggish area of passage, and excessive area of passage will lead to the three-dimensional ruler of the first flexible electrical connection 12
It is very little excessive, it is unfavorable for that deformation occurs, therefore, smoothly deformation occurs in order to make the first flexible electrical connection 12, and the first flexibility is electrically connected
The size of fitting 12 (such as thickness) at least in one dimension is smaller, to carry out bending deformation.
First variant part typically is provided at least one first bending part 124, according to it is required carry out deformation direction, first
Bending part 124 can be projected as bending structure in X/Y plane, YZ plane and XZ plane thrin.Specifically, for example, certain
One the first bending part 124 is projected as bending structure in X/Y plane, then first bending part 124 can be generated along X-axis
And the deformation quantity of Y-axis.Similarly, it is projected as bending structure in YZ plane, just can generates the shape along Y-axis and Z axis
Variable, is projected as bending structure in XZ plane, just can generate the deformation quantity along X-axis and Z axis.It should be noted that
It is, if projection of first bending part 124 in X/Y plane is in bending structure, in order to have a biggish area of passage, first
Bending part 124 just needs to have biggish size in Z-direction, can occupy a large amount of space in this way.
It can thus be seen that first bending part 124 is generally possible to the deformation quantity for ensuring to generate two dimensions, however want
Realize any movement of first link 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
Axis generates deformation quantity, so if only relying on first bending part 124, then or the first flexible electrical connection 12 also has it
Its deformation structure or make this first variant part and meanwhile can along X-axis, Y-axis and Z axis generate deformation quantity.
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 twists itself obtains the deformation quantity in third dimension.However, this twisting can generate it is larger
Tear edge, may make between first electrode component interconnecting piece 120 and first electrode component 10 or the first link block interconnecting piece
122 and first tearing phenomenon occurs between link block 14, weakens bonding strength, even wholly interrupted connection.By increasing by first
Flexibility be electrically connected part 12 the first bending part 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.
For the two (the first variant part can generate deformation quantity along X-axis, Y-axis and Z axis simultaneously), generally require first
Being sized in third dimension of bending part 124 is smaller, such as the first bending part 124 is designed to Filamentous or strip, with
It is also bent in third dimension convenient for the first bending part 124.It is electrically connected however, on the one hand this design will lead to the first flexibility
12 self-strength of fitting reduces, 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 whole using laminated structure, meanwhile, the first variant part tool
Standby first connecting portion 126 and two first bending parts 124a, 124b, the two first bending part 124a, 124b are not respectively
Projection in same plane is in bending structure, also, first bending part 124a, 124b is formed by bending structure projection place
Plane is parallel with the thickness direction of first bending part 124a, 124b itself, to realize the deformation quantity in three dimensions.Tool
Body, the first bending part 124a are projected as bending structure in XZ plane, meanwhile, the thickness direction of the first bending part 124a with
The change in shape of the first bending part and change, but be parallel to XZ plane always, and the first bending part 124b is in YZ plane
Be projected as bending structure, meanwhile, the thickness direction of the first bending part 124b is parallel to the direction YZ always.First bending part
124a, 124b pass through one end and are connected with first connecting portion 126, first electrode component interconnecting piece 120 and the first bending part 124a
One end far from first connecting portion 126 is connected, and the first link block interconnecting piece 122 and the first bending part 124b are far from first connecting portion
126 one end is connected.
In this way, first bending part 124a can generate deformation when the displacement of X-direction occurs for the first link block 14, when
When the displacement of Y direction occurs for the first link block 14, first bending part 124b can deformation occurs, when the first link block 14 occurs
When the displacement of Z-direction, first bending part 124a, 124b can deformation occurs simultaneously.
In the present embodiment, the first flexible electrical connection 12 can be made of a monolith sheet material, can also be used very thin
Several flexible connection pieces stack gradually to be formed, no matter which kind of mode used, the overall thickness of the first flexible electrical connection 12 is best
It is maintained within the scope of 0.1~1mm, preferred scope is 0.2~0.6mm.These flexible connection pieces are at least mutually solid in end positions
Fixed connection, and middle section, are particularly in the part of the first bending part 124a, between each other can be with independent activities, to improve
The deformability of first flexible electrical connection 12.
In the present embodiment, by the first flexible electrical connection 12 in this present embodiment and it is not involved in first electrode component 10
Deformation with the sealed connection of coping plate 30, therefore the first flexible electrical connection 12 will not influence the sealing performance of coping plate 30.
First electrode component 10 is sealed there are many kinds of the modes being electrically connected with coping plate 30, is recommended in the present embodiment following
Several ways.
Mode one, it is as shown in Figures 2 and 3, directly that first electrode component 10 and coping plate 30 is integrally disposed, for example, sharp
First electrode component 10 is formed on coping plate 30 with punching press or other processing technologys.Due to first electrode component 10 and coping plate
30 be integrated, therefore the problem of can be fully solved sealing and electrical connection, while this mode can also greatly simplify
Assembly technology simultaneously reduces the occupied space of first electrode component 10.At this point, first electrode component 10 is only needed to have with first
Pole 100, without other components.
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 passes through coping plate 30, and is tightly connected by the first electrode column sealing part 102 with coping plate 30, first
Pole 100 is electrically connected by the first electrical connector 104 with coping plate 30, keeps coping plate 30 positively charged, meanwhile, first electrode component
Interconnecting piece 120 is electrically connected with the first pole 100.First electrical connector 104 can be located at the top of coping plate 30, can also be located at
The lower section of coping plate 30 is under normal circumstances directly to contact electrical connection 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 bottom and the lower surface of coping plate 30, so that the bottom of the first pole 100 is electrically connected with the lower surface of coping plate 30.This
When, can by one be arranged between the first link block 14 and coping plate 30 first on insulating part 106 make the first connection
Block 14 insulate 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, is more specifically located at top cover
Between piece 30 and the first link block 14, the first pole 100 is also cross coping plate 30 and the first electrical connector 104, at this point,
One electrical connector 104 is contacted and is electrically connected with the side of the first pole 100, first electrode component interconnecting piece 120 and the first pole
100 top electrical connection.
In addition, 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 link block 14 etc. are electrically connected indirectly with the first pole 100.For example, making the first pole
100 pass through the first electrical connector 104 but are not electrically connected directly, first electrode component interconnecting piece 120 and the first pole 100
Contact electrical connection, the first link block interconnecting piece 122 contact electrical connection with the first link block 14, the first electrical connector 104 and meanwhile with
Coping plate 30 and the first link block 14, which contact, to be simultaneously electrically connected, thus make the first electrical connector 104 by the first link block 14 with
And first flexible electrical connection 12 be electrically connected indirectly with the first pole 100.
Power battery will form the drift bolt circuit by coping plate 30 and first electrode component 10 in the case where 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 easy sparking, causes battery core out of control,
Therefore when drift bolt, need to access a big resistance in drift bolt circuit.It therefore, can be by the first electrical connector 104 in mode two
It is designed as the resistance unit of resistance larger (1~100000 Ω), plays the role of resistance in increasing circuit, reduces electric current.
When the first electrical connector 104 is located at the lower section of coping plate 30, actually namely it is located at the inside of power battery,
Since it is considered that reducing volume, the first electrical connector 104 can use the form of resistance bolck.And when the first electrical connector 104
When the top of coping plate 30, then conductive plastic can be used, on the one hand protect the first flexible electrical connection 12, on the other hand
Movement for the first link block 14 provides buffering.
In the above scheme, the bottom of the first pole 100 directly contacts with coping plate 30 and by resistive short in order to prevent,
Insulating part 103 insulate under first being arranged between the bottom of the first pole 100 and the lower surface of coping plate 30.
It is likely to be encountered the problem of overcharging in power battery use process, overcharging will lead to power battery interior and heat up and make
Pressure rises, and leads to power battery explosion on fire.It, can also be to first electrode component 10 in the present embodiment in order to avoid this problem
And coping plate 30 optimizes, as shown in Figure 12 to 14, first electrode component 10 includes conductive sheet 101, first at this time
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, rotating sheet 105 seals rotating sheet connecting hole 300, and the first lower insulating part 103 is located at the lower section of coping plate 30, and and coping plate
30 are connected, and conductive sheet 101 is fixed by the first lower insulating part 103 with the insulation of coping plate 30, at the same time, conductive sheet 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, the first electricity
Connector 104 is electrically connected with coping plate 30, and first electrode component interconnecting piece 120 is electrically connected with the first electrical connector 104.
The electricity of power battery anode is exported by conductive sheet 101, is delivered to coping plate 30 by rotating sheet 105 later, then
First electrical connector 104 is delivered to by coping plate 30, is finally delivered to the first link block using the first flexible electrical connection 12
14.And when power battery interior pressure is more than reference pressure, rotating sheet 105 can overturn and disconnect the electricity with conductive sheet 101
Connection is interrupted so as to cause the transport path of anode, releases the overcharging state of power battery.In order to guarantee that rotating sheet 105 can
It smoothly overturns and disconnects and be electrically connected with conductive sheet 101, be preferably provided with weak area on conductive sheet 101, when rotating sheet 105 is overturn
When, weak area can be broken since stress is concentrated, so that rotating sheet 105 be made smoothly to turn over.
In the present embodiment, as shown in Figure 16 to 19, the first link block interconnecting piece 122 can under the first link block 14
Surface connection, such as first accommodating chamber 11 is surrounded between the first link block 14 and first electrode component 10, 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 above structure
It restricts, it is thus possible to influence the mobile range of the first link block 14.It at this time can be by being set in the lower surface of the first link block 14
The mode for setting relief portion 148 extends the space (referring to Figure 17,19) of the first accommodating chamber 11, but due to the first link 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 link block 14, accommodate for first
The spatial spread ability of chamber 11 is limited.
As shown in Fig. 1 to 14,20 to 22, in the present embodiment, the first link block interconnecting piece 122 and first can also be 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 the first region between link block 14, therefore the first flexible electrical connection 12 can have bigger size and more
Complicated structure, enables adaptation to the movement of the first link block 14 by a larger margin.
As shown in Fig. 8 to 11 and Figure 14, in order to enable the first link block interconnecting piece 122 smoothly to arrive at the first link block
14 upper surface, can be equipped with the first connecting hole 140 on the first link block 14, and the first link block interconnecting piece 122 passes through first
It is electrically connected after connecting hole 140 with the upper surface of the first link block 14.As shown in Fig. 1 to 7,12 to 13,20 to 22, the first link block
Interconnecting piece 122 can also by the first link block 14 lower section via the first link block 14 side around to the first link block 14 upper table
Face, and be electrically connected with the upper surface of the first link block 14.
If directly making the first link block interconnecting piece 122 by the side of the first link block 14 around to the upper of the first link block 14
Surface, a part that may cause the first flexible electrical connection 12 are protruded except the first link block 14, this part is highly susceptible to
External action and damage.In this regard, can be optimized to the structure of the first link block 14, forms it in side and be internally recessed
The first notch (unlabeled in figure), the first flexible electrical connection 12 can by first notch bypass the first link block 14, from
Without protruding from except the first link block 14, and then obtain good protection.In order to save space and improve the whole of entirety
Clean property, the first notch and the first flexible electrical connection 12 are preferably profile-followed.
It is attached for the ease of the first link block 14 with busbar connector, the upper surface of the first link block 14 is preferably maintained in flat
It is whole, therefore, it is preferably provided with first link slot 142 in the upper surface of the first link block 14, when the first link block interconnecting piece 122
When connecting with the upper surface of the first link block 14, the first link block interconnecting piece 122 is electrically connected with the first link slot 142, to make
The upper surface of first link block interconnecting piece 122 is no more than the upper surface of the first link block 14.First link slot 142 is connect with first
Block interconnecting piece 122 is preferably profile-followed.
In the present embodiment, the second link block 24 is located at the top of second electrode component 20, is also connected as with busbar connector
The component connect.The busbar connector connecting with the second link block 24 also uses straight panel structure, and when power battery expands, second connects
It is fixed for connecing the position between block 24 and busbar connector.And in order to prevent because the second link block 24 is with the expansion of power battery
And be subjected to displacement, so that the weak area between the second link block 24 and busbar connector is caused to be broken, it is sharp in the embodiment of the present application
Second electrode component 20 and the second link block 24 are connected with the second flexible electrical connection 22, so that the second link block 24 and the
Relative position between two electrode assemblies 20 can change, so that it is defeated to influence its when power battery expands
Out.
Continuing with referring to Fig. 1 to 22, second flexible electrical connection 22 similar with the structure of the first flexible electrical connection 12
Have second electrode component interconnecting piece 220, the second link block interconnecting piece 222 and the second variant part (unlabeled in figure), second
Electrode assembly 20 is electrically connected with second electrode component interconnecting piece 220, and the second link block 24 is electrically connected with the second link block interconnecting piece 222
It connects.Second variant part has dough deformation ability, can deformation occurs under external force.
When multiple power batteries using this top cover structure of power battery form battery modules, it can equally pass through confluence
Row is fitted and connected with the upper surface of multiple second link blocks 24 simultaneously, when power battery expands, second electrode component 20
Also it can be subjected to displacement, and since the second link block 24 links together with busbar connector, the second link block 24 is fixed
, this allows for that relative displacement also occurs between the second link block 24 and second electrode component 20.
With coping plate 30 for benchmark object, when relative to coping plate 30 relative displacement occurs for the second link block 24, due to the
Two link block interconnecting pieces 222 link together with the second link block 24, therefore the second link block interconnecting piece 222 can follow the second company
It connects block 24 to move together, and second electrode component 20 relative to coping plate 30 is fixed at this time, therefore second electrode group
Part interconnecting piece 220 is also fixed, allow in this way second electrode component interconnecting piece 220 and the second link block interconnecting piece 222 it
Between relative displacement has occurred, and the deformation that the offset of relative displacement will pass through the second variant part is absorbed and is supplemented, and is avoided
Second flexible electrical connection 22 is directly broken and loses conductive capability.
In order to reduce resistance, the second flexible electrical connection 22, which generally requires, has biggish area of passage, and excessive mistake
The three-dimensional dimension that flow area will lead to the second flexible electrical connection 22 is excessive, is unfavorable for that deformation occurs, therefore, second soft in order to make
Property electrical connector 22 smoothly deformation occurs, the size of the second flexible electrical connection 22 (such as thickness) at least in one dimension is wanted
It is smaller, to carry out bending deformation.
Identical as the first flexible electrical connection 12, the second flexible electrical connection 22 can also use laminated structure, while the
Two variant parts can also have the second bending part 224 and a second connecting portion 226, also, the quantity of the second bending part 224, set
It sets mode and function and is also referred to the first bending part 124 and be designed, such as the second bending part 224a and second is set
Bending part 224b.In the present embodiment, the second flexible electrical connection 22 can be made of a monolith sheet material, can also be using very
Thin several flexible connection pieces stack gradually to be formed, and details are not described herein.
Second electrode component 20 and coping plate 30 also and are not involved in by the second flexible electrical connection 22 in this present embodiment
Sealed connection, therefore the deformation of the second flexible electrical connection 22 will not influence the sealing performance of coping plate 30.
In the present embodiment, second electrode component 20 is including on the second pole 200, the second electrode column sealing part 202 and second
Insulating part 206, the second pole 200 passes through coping plate 30, and is connected by the second electrode column sealing part 202 with 30 sealed insulation of coping plate
Connect, on second insulating part 206 between the second link block 24 and coping plate 30, guarantee the second link block 24 and coping plate 30 it
Between electrical isolation, second electrode component interconnecting piece 220 is electrically connected with the second pole 200.It is also possible in the second pole 200
Bottom and coping plate 30 lower surface between the lower insulating part 203 of setting second insulate.
With as the first flexible electrical connection 12, the second link block interconnecting piece 222 of the second flexible electrical connection 22 can be with
It is connect with the lower surface of the second link block 24, such as surrounds one second between the second link 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 link block interconnecting piece 222 is electrically connected with the upper surface of the second link block 24, such as
Set second connecting hole 240 on two link blocks 24, the second link block interconnecting piece 222 passes through after the second connecting hole 140 with second
The upper surface of link block 24 is electrically connected.Alternatively, the second link block interconnecting piece 222 is connected by the lower section of the second link block 24 via second
The side of block 24 is connect to be electrically connected around to the upper surface of the second link block 24, and with the upper surface of the second link block 24.In order to protect
Second flexible electrical connection 22 also can be set the second notch (in figure unlabeled), setting in the side of the second link block 24
Mode and function are identical as the first notch on the first link block 14.
It is attached for the ease of the second link block 24 with busbar connector, the upper surface of the second link block 24 is preferably maintained in flat
It is whole, preferably also there is second link slot 242, the second link block interconnecting piece 222 and the in the upper surface of the second link block 14
Two link slots 242 electrical connection, to make the upper surface of the second link block interconnecting piece 222 no more than the upper table of the second link block 24
Face.
The present embodiment passes through first connection of the first flexible electrical connection 12 and the flexible connection of the second flexible electrical connection 22
Block 14 and the second link block 24 can make the first link block 14 and the second link block under the premise of keeping status of electrically connecting
24 along X-axis, Y-axis and Z axis obtain certain amplitude displacement, and then preferably absorb because cell expansion and absorption caused by with
Active force between busbar connector.
Embodiment two
Embodiments herein two has carried out structure improvement on the basis of example 1.In example 1, although
One link block 14 has locomotivity, but if the amount of movement of the first link block 14 has been more than the first flexible electrical connection 12
Deformability, then the first flexible electrical connection 12 is just likely to occur fracture, or is detached from and the first link block 14 and first
The status of electrically connecting of electrode assembly 10, regardless of that situation occurs, will lead to the first link block 14 can not again with power electric
The anode connection in pond.Likewise, the second link block 24 a possibility that there is also this thing happens, therefore, it is necessary to first
The specific mobile range of link block 14 and the second link block 24 is limited, and move it can only in reasonable range
It is dynamic.
To solve the above-mentioned problems, as shown in Figure 23 to 25, top cover structure of power battery provided by the present embodiment is except tool
Except the structure of standby embodiment one, it is also equipped with the first locating part 16 and the second locating part 26.It is provided on first link block 14
First spacing auxiliary section 144, the first spacing auxiliary section 144 can be cooperatively connected with the first locating part 16, and the two is connecting
It can mutually restrict later, the first locating part 16 is enable to limit the movement of the first spacing auxiliary section 144.Due to the first link block
Interconnecting piece 122 is electrically connected with the first link block 14, and the two moves together, and limits the first spacing auxiliary section
144, also mean that the amount of movement of the first link block 14 is limited.
As shown in figure 24, the first spacing auxiliary section 144 is the first limit hole (in order to make it easy to understand, hereafter continuing to use attached 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, such as is directly anchored on coping plate 30, or be 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 embodiment one
First electrode component 10 is not limited solely to the first electrode component 10 comprising conductive sheet 101 and rotating sheet 105.First limit
Cap 162 is located at the first side of the link block 14 far from coping plate 30, and the first limited post 160 is along Z axis after the first limit hole 144
It is fixedly connected with the first limited cap 162 by riveting, welding or other way, the first limited post 160 and the first limited cap
162 can limit the first moving along Z-direction of link block 14.
It, can be by the first locating part 16 and first since insulating part 106 is generally made of insulated plastic on first
Upper insulating part 106 is integrally formed, assembly efficiency is improved, insulating part 106 can be identical material on the first locating part 16 and first
Matter is also possible to different materials.
Here it limits the mobile mode of the first limit hole 144 and is broadly divided into two classes, the first kind is the first limit hole 144 along X
The movement of axis, Y-axis, that is, moving radially relative to the first limited post 160, the second class are the first limit holes 144 along Z-direction
Movement, that is, the axial movement relative to the first limited post 160.As needed, the first locating part 16 can be entirely limited
Firmly the one type of the first limit hole 144 it is mobile (such as make the first limit hole 144 completely and not can be carried out to move along X-axis, Y-axis,
Or not can be carried out moving along Z axis completely), while allowing the another kind of movement of the first limit hole 144 progress certain amplitude.When
So, it is desirable to the first limit hole 144 be made to be able to carry out the movement of certain amplitude in tri- dimensions of XYZ.
Specifically, for first kind move mode, the diameter of the first limit hole 144 is needed greater than the first limited post 160
Diameter can form the first annular space 164, due to the first annular space 164 between the first limit hole 144 and the first limited post 160
In the presence of the first limit hole 144 can be moved along the radial direction of the first limited post 160, and mobile amplitude is equal to the first limit
The radial dimension of difference in position hole 144 and the first limited post 160 moves to realize and limit the first limit hole 144 along the direction XY
The purpose of amount.
It, can be using in larger-size first limited post 160 of Z-direction in the present embodiment for the second class move mode
Cooperation in lesser first limit hole 144 of Z-direction, enable the first limit hole 144 along the first limited post 160 it is axial into
Row movement, at the same time, since one end of the first limited post 160 is fixed, and the other end fixes the first limited cap 162, because
This first link block 14 just can not actually be detached from the first limited post 160, and be merely able to the axial dimension in the first limited post 160
It is moved in range.
As shown in figure 25, it is contemplated that the planarization problem of 14 upper surface of the first link block, the present embodiment is by the first limited cap
142 are located in the first limit hole 144, while blocking portion 146 being arranged in the first limit hole 144, for stopping the first limited cap
142 are detached from the first limit hole 144 by lower section.Since the first limited cap 142 is located in the first limit hole 144, the first limit
The upper surface of cap 142 can be no more than the upper surface of the first link block 14.
If a set of first locating part 16 and the first spacing auxiliary section 144 is only arranged, possibly the first company can not be limited
Block 14 is connect to be rotated in X/Y plane, and if multiple first locating parts 16 are arranged simultaneously, while on the first link block 14
Multiple first spacing auxiliary sections 144 are provided with, the first locating part 16 is cooperatively connected one by one with the first spacing auxiliary section 144, just can
It enough solves the problems, such as this, keeps rotation of first link block 14 in X/Y plane also restrained.
The quantity of 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 holds along the two sides of X-axis if forming first between first electrode component 10 and the first link block 14
Receive chamber 11, then the first locating part 16 can also be arranged directly with respect to the first accommodating chamber 11.Since the length direction of coping plate 30 is
Along the x axis, therefore in the X-axis direction space is more abundant, on the one hand can avoid the first flexible electrical connection 12 in this way,
On the other hand the first flexible electrical connection 12 can also be formed and is protected.
In electric energy transmission process, the first flexible electrical connection 12 meeting persistent fever, if these heats cannot dissipate in time
Hair then may cause the first flexible electrical connection 12 overheat and even fuse, as shown in figure 29, can be in order to avoid this problem
First extended portion 128 is set on the first flexible electrical connection 12, and first extended portion 128 is located at first electrode component interconnecting piece
120 and first between link block interconnecting piece 122, and as shown in Figure 26 to 28, in assembling process, due to the first limit, 16 along X-axis
The two sides of first flexible electrical connection 12 are set, therefore in order to avoid the first locating part 16, the first flexible electrical connection 12
At least part stretches out the first accommodating chamber 11 along Y-axis, and first extended portion 128 is just located at the portion stretched out except the first accommodating chamber 11
Point, and extend along X-axis, to increase heat dissipation area, improve radiating efficiency.
Also, if the first variant part is when having the first bending part 124a for being projected as bending structure in XZ plane, until
A rare first bending part 124a be stretch out the first accommodating chamber 11 except, and at this time first extended portion 128 and stretch out first
Accommodate the first bending part 124a connection except preceding 11.Design is not only able to increase radiating surface using first extended portion 128 in this way
Product, while the intensity of bending part can also be improved.
However, its whole conveyance capacity depends on the first link block for entire first flexible electrical connection 12
The independent conveyance capacity of 120 this each part of interconnecting piece 122, the first variant part and first electrode component interconnecting piece, which
Conveyance capacity too low first flexible electrical connection 12 that will lead in part is blown.Therefore, in the present embodiment, in order to improve
The whole conveyance capacity of one flexible electrical connection 12 is also equipped with the first link block auxiliary on the first link block interconnecting piece 122 and connects
Socket part 122a, while first electrode component auxiliary interconnecting piece 120a is also equipped on first electrode component interconnecting piece 120,
First link block auxiliary interconnecting piece 122a can extend to the side of first extended portion 128, to increase first
The contact area of link block interconnecting piece 122 and the first link block 14, likewise, first electrode component auxiliary interconnecting piece 120a also can
The side of first extended portion 128 is extended to, for increasing first electrode component interconnecting piece 120 and the contact of first electrode component 10
Area.After contact area increases, it just can reinforce conveyance capacity.
In order to protect first extended portion 128, the first notch of 14 side of the first link block can by the first bending part 124 with
And first extended portion 128 accommodates together.
Continuing with referring to fig. 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 by setting on the second link block 24
The second spacing auxiliary section 244 (such as second limit hole) cooperated to limit the displacement amplitude of the second link block 24.Second
Locating part 26 can be fixed on coping plate 30 as the first locating part 16, can also fix various structures in example 1
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 to this, the second flexible electrical connection 22 in the present embodiment can also have the second extension 228
It radiates, and assists interconnecting piece 220a and the second link block that interconnecting piece 222a is assisted to improve second by second electrode component
The whole conveyance capacity of flexible electrical connection 22, the set-up mode of dependency structure is identical as the first flexible electrical connection 12, herein
It repeats no more.
Embodiment three
Embodiments herein three has carried out structure improvement on the basis of example 2.In embodiment one and embodiment
In two, the first link block 14 and the second link block 24 can be displaced relative to coping plate 30, still, be connected by first
Block 14 is connect and when the second link block 24 is attached with busbar connector, if the first link block 14 and the equal energy of the second link block 24
It is enough arbitrarily mobile, it will assembly is caused to bother.
To solve the above-mentioned problems, as shown in Figure 30 to 32, top cover structure of power battery provided by the present embodiment is except tool
Except the structure of standby embodiment two, it is also equipped with the first elastic component 18 and the second elastic component 28.First elastic component 18 and second
The effect of elastic component 28 is when the first link block 14 and the second link block 24 are moved relative to the generation of coping plate 30
Elastic deformation, and external force revocation after spring back, and rebound while push the first link block 14 and the second link block 24 to
Position before movement is turned back, to guarantee that the first link block 14 and the second link block 24 can have substantially stationary position to be used for
Assembly.
Specifically, as shown in figure 30, the first elastic component 18 includes the first radial elastic part 180 and first axis elastic component
182, the first radial elastic part 180 is embedded in the first annular space 164, and can be in the first link block 14 under external force along X-axis
Or it is deformed when Y-axis movement.The first radial elastic part 180 is detached from the first limit hole 144, this reality by lower section in order to prevent
Applying can use blocking portion 146 and stops to the first radial elastic part 180 in example, that is to say, that in assembly, by the first diameter
It is arranged between blocking portion 146 and the first limited cap 162 to elastic component 180.At this point, preferably guaranteeing the first limited cap 142
Upper surface is no more than the upper surface of the first link block 14.The structure of blocking portion 146 can use limited block form, it is preferred to use ring
Shape baffle.
With continued reference to Figure 30, first axis elastic component 182 is set to the lower section of the first link block 14, such as is arranged first
Between link block 14 and coping plate 30, or it is arranged between the first link block 14 and first electrode component 10.When the first connection
When block 14 is moved down along Z axis under external force, first axis elastic component 182 can be compressed, and after external force revocation, the
One link block 14 can be jacked up upwards by first axis elastic component 182, until being limited by the first limited cap 162.At this point, first
Link block 14 is limited by the first limited cap 162 and first axis elastic component 182 by opposite both direction.
Any position below the first link block 14 can be set in first axis elastic component 182, only it is noted that avoiding it
First axis elastic component 182 however, it is contemplated that saving space, and convenient for assembly, is preferably set in first by its component
On limited post 160.Also, it can also be arranged one on insulating part 106 on coping plate 30, the first electrical connector 104 or first
The bottom of first recessed portion (unlabeled in figure), the first limited post 160 is fixed in the first recessed portion, and with the first recessed portion it
Between form the second annular space 166, by first axis elastic component 182 be embedded in the second annular space 166 in, to reduce first axis elastic component
182 in the occupied space of Z-direction, while making the upper surface of first axis elastic component 182 beyond the first recessed portion, with the
One link block 14 contacts and provides active force.
In the present embodiment, as shown in figure 31, the first limited post 160 may include lower cooperation section 160a and upper cooperation section
160b, the diameter of lower cooperation section 160a are greater than the diameter of upper cooperation section 160b, and first axis elastic component 182 is set in lower cooperation section
On 160a, and the first radial elastic part 180 is then set on cooperation section 160b.Thicker lower cooperation section 160a can be improved
The structural strength and bonding strength of one limited post 160, and the first limited block 14 moving mainly by upper along X-axis and Y-axis
Cooperation section 160b is limited, and therefore, lesser upper cooperation section 160b is conducive to improve the mobile range of the first link block 14.
First radial elastic part 180 and first axis elastic component 182 can take various forms, such as around the first limit
The setting of column 160 one circle in position serves as the first radial elastic part 180, one circle of setting along the spring of the first limited post 160 radially extended
Axially extending spring along the first locating part 160 serves as first axis elastic component 182.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 recommendation of first axis elastic component 182 are adopted
With the cyclic structure made of elastic material.
Likewise, the structure and function of the second elastic component 28 in the present embodiment are similar with the first elastic component 18,
It may include the second radial elastic part 280 and the second axial elasticity part 282, and according to the setting position of the second limited post 260,
Second recessed portion 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 recessed portions, the second axial elasticity part 282 is embedded between the second recessed portion and the second limited post 260, to reduce the second axis
To elastic component 282 in the occupied space of Z-direction, while making the upper surface of the second axial elasticity part 282 beyond the second recess
Portion, to be contacted with the second link block 24 and provide active force.Also, the second limited post 260 can also be using similar first limit
The two-part structure of column 160 is to reach identical technical effect, and details are not described herein.
Top cover structure of power battery provided by the embodiment of the present application can make the first link block and the second link block into
Row relative displacement absorbs the active force between busbar connector, while can also limit the first link block and the second link block
Displacement amplitude, and the first link block and the second link block can be made to return to initial position in its natural state.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application, is based on the application any modification, equivalent replacement, improvement
Deng should be included within the scope of protection of this application.
Claims (11)
1. a kind of top cover structure of power battery, which is characterized in that including coping plate, first electrode component, second electrode component,
Two flexible electrical connections and the second link block,
The first electrode component is electrically connected with the coping plate, and the second electrode component and coping plate sealing and electricity are absolutely
Edge,
Second link block is located at the top of the second electrode component, and second link block passes through second flexible electrical
Connector is electrically connected with the second electrode component, and second flexible electrical connection has second electrode component interconnecting piece,
Two variant part the second link block interconnecting pieces, the second electrode component interconnecting piece is electrically connected with the second electrode component, described
Second link block interconnecting piece is electrically connected with second link block, and second variant part connects the second electrode component connection
Portion and the second link block interconnecting piece,
Under the premise of keeping status of electrically connecting, second link block under external force can be relative to the second electrode
Component is subjected to displacement, and the second link block interconnecting piece can be moved together with second link block, and described in pulling
Deformation occurs for second variant part；
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 is connected by the second electrode column sealing part and the coping plate sealed insulation
It connects, insulating part is between second link block and the coping plate on described second, the second electrode component interconnecting piece
It is electrically connected with second pole.
2. top cover structure of power battery as described in claim 1, which is characterized in that include mutually hanging down in three-dimensional cartesian coordinate system
The length direction of straight X-axis, Y-axis and Z axis, the coping plate is X-axis, and width direction is Y-axis, and thickness direction is Z axis,
Second variant part has at least one second bending part, and second bending part is in X/Y plane, YZ plane and XZ
Bending structure is projected as in plane thrin.
3. top cover structure of power battery as claimed in claim 2, which is characterized in that second flexible electrical connection is sheet
Structure, and the thickness side of the plane where the projection of second bending part and second bending part for forming the projection
To parallel.
4. top cover structure of power battery as claimed in claim 3, which is characterized in that second variant part has the second connection
Portion and two second bending parts,
One of them described second bending part is projected as bending structure in YZ plane, another described second bending part is in XZ
It is projected as bending structure in plane, two second bending parts are connected by the second connecting portion.
5. such as the described in any item top cover structure of power battery of Claims 1-4, which is characterized in that second link block connects
Socket part is electrically connected with the lower surface of second link block or upper surface.
6. top cover structure of power battery as claimed in claim 5, which is characterized in that have second to connect on second link block
Hole or the second notch are connect, the second link block interconnecting piece passes through second connecting hole or the second notch is connect with described second
The upper surface of block is electrically connected.
7. top cover structure of power battery as claimed in claim 5, which is characterized in that the upper surface of second link block has
Second link slot, the second link block interconnecting piece are electrically connected with second link slot, the second link block interconnecting piece
Upper surface is no more than the upper surface of second link block.
8. top cover structure of power battery as described in claim 3 or 4, which is characterized in that the second flexible electrical connection packet
Containing several flexible connection pieces, several flexible connection pieces are cascading, and are at least mutually permanently connected in end positions.
9. a kind of power battery, which is characterized in that including the described in any item top cover structure of power battery of claim 1 to 8.
10. a kind of battery modules, which is characterized in that multiple including busbar connector and multiple power batteries as claimed in claim 9
It is electrically connected between second link block by the busbar connector.
11. battery modules as claimed in claim 10, which is characterized in that the busbar connector is straight panel structure, and described second connects
The upper surface and the busbar connector for connecing block are fitted and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010684.7A CN106601940B (en) | 2017-01-06 | 2017-01-06 | Power battery top cover structure, power battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010684.7A CN106601940B (en) | 2017-01-06 | 2017-01-06 | Power battery top cover structure, power battery and battery module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106601940A CN106601940A (en) | 2017-04-26 |
| CN106601940B true CN106601940B (en) | 2019-10-22 |
Family
ID=58582429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010684.7A Active CN106601940B (en) | 2017-01-06 | 2017-01-06 | Power battery top cover structure, power battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106601940B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109964336B (en) * | 2017-01-06 | 2021-10-08 | 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 |
| CN207800665U (en) * | 2018-02-01 | 2018-08-31 | 宁德时代新能源科技股份有限公司 | The cap assembly and secondary cell of secondary cell |
| CN207818750U (en) * | 2018-02-12 | 2018-09-04 | 宁德时代新能源科技股份有限公司 | Battery modules |
| CN110752340B (en) * | 2018-07-23 | 2021-02-09 | 宁德时代新能源科技股份有限公司 | Sampling assembly and battery module |
| 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 |
| CN111029489B (en) * | 2019-08-14 | 2021-08-17 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN114784426A (en) * | 2022-04-12 | 2022-07-22 | 浙江极氪智能科技有限公司 | Power battery cover plate and power battery |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903867A (en) * | 2011-07-28 | 2013-01-30 | Sb锂摩托有限公司 | Rechargeable battery |
| CN105977411A (en) * | 2016-06-27 | 2016-09-28 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap and secondary cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9023498B2 (en) * | 2011-07-07 | 2015-05-05 | Samsung Sdi Co., Ltd. | Rechargeable battery |
-
2017
- 2017-01-06 CN CN201710010684.7A patent/CN106601940B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903867A (en) * | 2011-07-28 | 2013-01-30 | Sb锂摩托有限公司 | Rechargeable battery |
| CN105977411A (en) * | 2016-06-27 | 2016-09-28 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap and secondary cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106601940A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106601940B (en) | Power battery top cover structure, power battery and battery module | |
| EP3343672B1 (en) | Busbar for cooling battery cell and battery module using same | |
| CN101997104B (en) | Rechargeable battery | |
| US9324982B2 (en) | Battery module | |
| US9251986B2 (en) | Rechargeable battery | |
| CN110168771A (en) | Battery module and battery pack including the battery module | |
| EP3696882A1 (en) | Battery module having busbar, and battery pack | |
| CN102376931A (en) | Rechargeable battery | |
| CN103138027A (en) | High thermal conductivity battery pack | |
| CN107636887A (en) | Battery module | |
| CN115064761A (en) | Overcharge protection system for prismatic lithium ion battery cells with dual spiral disk feature | |
| KR101761825B1 (en) | Battery module, and battery pack including the same | |
| KR102066197B1 (en) | Battery module and battery pack including the same | |
| KR20110105945A (en) | Secondary electric cell with cooling structure | |
| CN109937494A (en) | Top cover structure of power battery, power battery and battery modules | |
| CN109964336A (en) | Top cover structure of power battery, power battery and battery modules | |
| KR102028916B1 (en) | Battery Pack for Secondary Battery | |
| CN112117426B (en) | Single battery, power battery pack and vehicle | |
| KR101444509B1 (en) | Battery Module of Improved safety and Battery pack including the same | |
| CN109937493A (en) | Top cover structure of power battery, power battery and battery modules | |
| CN111384464A (en) | Battery module and battery pack | |
| KR20190112581A (en) | Voltage sensing module of terminal using elasticity and battery module comprising the same | |
| EP4016714B1 (en) | Case body for battery, battery and electric device | |
| KR20140028337A (en) | Interconnect for electrode-tabelectrochemical cell using the same | |
| KR20160049826A (en) | Flexible lead tab of battery, battrey cell and stack of the same with the lead tab |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |