CN110176560A - Secondary cell top cover - Google Patents
Secondary cell top cover Download PDFInfo
- Publication number
- CN110176560A CN110176560A CN201910443706.8A CN201910443706A CN110176560A CN 110176560 A CN110176560 A CN 110176560A CN 201910443706 A CN201910443706 A CN 201910443706A CN 110176560 A CN110176560 A CN 110176560A
- Authority
- CN
- China
- Prior art keywords
- coping plate
- connecting portion
- secondary cell
- top cover
- connector
- 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.)
- Pending
Links
- 230000010485 coping Effects 0.000 claims abstract description 96
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 238000003466 welding Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005452 bending Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 206010057071 Rectal tenesmus Diseases 0.000 description 4
- 208000012271 tenesmus Diseases 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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 present invention provides a kind of secondary cell top covers, it include: coping plate and the first electrode unit and second electrode unit for being set to coping plate, coping plate has first electrode hole, first electrode unit includes first terminal and first connecting portion, first terminal is located at the top of coping plate and insulate so as to the first insulating part and coping plate, first connecting portion wears first electrode hole and is fixedly connected with first terminal, first connecting portion be electrically insulated with coping plate and the two in horizontal direction be equipped with gap, first connecting portion is equipped with the platform part being located at below coping plate, it is equipped between platform part and coping plate and encloses the sealing element for setting first connecting portion, platform part supporting sealing member, and the edge of the one end of platform part far from first connecting portion is on the bottom surface that the orthographic projection on coping plate is located at coping plate.Secondary cell top cover connection reliability with higher, convenience and safety of the invention, while the platform part being arranged can effectively avoid secondary cell top cover from assembling the influence to sealing effect.
Description
Technical field
The present invention relates to energy storage instrument field more particularly to a kind of secondary cell top covers.
Background technique
The driving power of modern society, more and more electric tools and the new energy vehicles is towards high capacity, Gao An
The direction of full property is developed, and battery is widely used in electric tool and the new energy vehicles with good characteristics such as its high capacity
In.These batteries should also have good safety to can be only achieved the standard used and meet people other than with high capacity
Demand.
General secondary cell, negative pole end needs to meet to be electrically insulated with top cover and shell, thus can be arranged numerous exhausted
Edge component, such as by upper plastic parts that negative terminal insulate with top cover, be placed in the sealing in cathode mounting hole being electrically insulated and sealed
Part and the lower plastic parts that negative straps are electrically insulated with top cover, these components are in the installation for carrying out coping plate negative pole end
When, in order to which the required precision of its air-tightness of strict control, installation is very high, precompressed should be carried out to sealing element, again stringent control
The gap between each component is made, thus at high cost and yields is low.And secondary cell top cover is carrying out and is connecting battery core pole piece
Connection sheet when carrying out assemble welding, sealing element regular can deform and being extruded in gap when being pressurized is gone and is lost
Sealing effect, the leakproofness for eventually leading to secondary cell top cover are deteriorated.
Therefore, it is badly in need of providing the new cap structure of one kind to solve the problems, such as above-mentioned generation leakproofness decline.
Summary of the invention
It is an object of the present invention to provide a kind of secondary cell top cover in view of the deficiencies of the prior art, can effectively protect
Demonstrate,prove leakproofness of the secondary cell top cover in assembly.
In order to achieve the above objectives, the present invention provides a kind of secondary cell top covers, comprising: coping plate and is set to the top
The first electrode unit and second electrode unit of cover plate, the coping plate have first electrode hole, the first electrode unit packet
Include first terminal and first connecting portion, the first terminal be located at the top of the coping plate and so as to the first insulating part with it is described
Coping plate insulation, the first connecting portion wear the first electrode hole and are fixedly connected with the first terminal, described first
Interconnecting piece is electrically insulated with the coping plate and the two in horizontal direction is equipped with gap, the first connecting portion be equipped be located at it is described
Platform part below coping plate is equipped between the platform part and the coping plate and encloses the sealing element for setting the first connecting portion,
The platform part supports the sealing element, and the edge of the one end of the platform part far from the first connecting portion is in the top cover
The orthographic projection of on piece is located on the bottom surface of the coping plate.
First electrode unit is divided into first terminal and first connecting portion by secondary cell top cover of the invention, first terminal and
Coping plate is isolated by the first insulating part, and first connecting portion is isolated by sealing element with coping plate, passes through electrode unit
It split type structure and is individually insulated with coping plate, the reliability, convenience and safety of connection can be improved.First connecting portion simultaneously
The platform part supporting sealing member being equipped with, the platform part of supporting sealing member can generate stronger compressing force to sealing element makes sealing element
More preferably, and the edge of the one end of platform part far from first connecting portion is located at coping plate in the orthographic projection on coping plate to sealing effect
On bottom surface, thus platform part can cover the lower end in gap to the range for the stress that sealing element applies, and can effectively avoid secondary electricity
Top cover sealing element in assembly in pond is extruded into the sealing effect in gap and influencing itself.
Further, first insulating part is connected to the top of the sealing element, and sealing element top is by the first insulating part
It abuts, lower end is supported by platform part, thus sealing element reliable can effectively realize it between platform part and coping plate
Leakproofness.
Further, the sealing element has body part and upwardly extends the protrusion formed by one end of the body part
Portion, for the body part between the platform part and the coping plate, the lug boss, which is filled in the gap and encloses, sets institute
It states first connecting portion and the first connecting portion and the coping plate is isolated, platform part primarily serves sealing effect, lug boss
Primarily serve insulation and isolation effect.
Further, first dielectric insulator segments protrude into the gap and abut the top of the lug boss.
Further, the platform part covers the sealing element on the coping plate in the orthographic projection on the coping plate
Orthographic projection, the lower part of the first connecting portion is fixedly connected with the first connector being electrically connected with the first pole piece of secondary cell,
The platform part is located at the top of first connector.Further, the lower end of the first connecting portion is equipped with stage portion,
The first connecting portion is fitting to connection by the stage portion and first connector.Further, the first connecting portion
Upper end and first terminal riveting fix, the lower end of the first connecting portion is equipped with stage portion, and the first connecting portion is logical
It crosses the stage portion and first connector to be fitting to connection, by riveting fixed first connecting portion and the first terminal of may make
It is more firm to connect, and first connecting portion and the first connector are fitting to connection, and can avoid the first connector in secondary cell repeatedly
The reliability of connection is influenced in use process because of the past tenesmus of the reasons such as shaking.Or, the top concave shaped of first connector
At groove, the groove is fixed on by laser fuU penetration welding in the lower part of the first connecting portion, is fixed by laser fuU penetration welding, and
Through-hole is set on non-first connector so that first connecting portion is worn, connection fixing can be made stronger.
Further, the sealing element covers the platform part on the coping plate in the orthographic projection on the coping plate
Orthographic projection, the lower part of the first connecting portion is fixedly connected with the first connector being electrically connected with the first pole piece of secondary cell,
The platform part is fitting to connection in first connector, is directly fitting to connection the first connector by platform part, can be made secondary
The overall height dimension of battery cap reduces, and can make the combination between first connecting portion and the first connector by chimeric mode
Property is stronger.Further, the first connecting portion is additionally provided with stage portion below the platform part, and the stage portion is in institute
It states the orthographic projection on coping plate and covers the platform part in the orthographic projection on the coping plate, first connector is arranged in institute
Stage portion is stated, can avoid the first connector influences to connect during the Reusability of secondary cell because of the past tenesmus of the reasons such as shaking
The reliability connect.
Further, the first connecting portion is two, and the first electrode hole also corresponds to two, first insulation
Part is all downwardly extending the first extension at two first electrode holes, and first extension and the coping plate are embedding
Connection is closed, two first connecting portions may make the conveyance capacity of first electrode unit stronger, and two first connecting portions can also produce
Biological and ecological methods to prevent plant disease, pests, and erosion stops the effect of first electrode unit rotational, and first connecting portion is fitting to connection by the first extension and coping plate, can be into one
The fixing that step enhancing first connecting portion is connected with coping plate.Further, first insulating part is in two described first
The second extension is additionally provided between extension, second extension and the coping plate are fitting to connection, and the second extension is set
It sets and not only further enhances anti-rotation effect, moreover it is possible to which the fixing for connecting first connecting portion with coping plate is stronger.
Further, the edge of first insulating part, which is upwardly extended and enclosed, is set as accommodating chamber, and first insulating part is logical
It crosses the accommodating chamber and the first terminal is fitting to connection, may make the first insulating part to connect with first terminal by being fitting to connection
It is more firm, and electrical isolation isolation can also be carried out to the side of first terminal under the premise of making full use of the useful space.
Further, first connector has ontology, bending part and connection sheet, and the ontology is connect with described first
Portion is fixedly connected, and one end of the ontology is bent to form bending part, and the bending part is downwardly extending electrical connection described first
The connection sheet of pole piece, is equipped with the second insulating part between the ontology and the coping plate, this first connector is suitable for M6T (electricity
Stretching direction of the pond core direction perpendicular to pole) in secondary cell, using this structure can convenient for the first connector and pole piece it
Between connection, and conveyance capacity is strong.
Further, the coping plate also has second electrode hole, and the second electrode unit includes Second terminal and
Two interconnecting pieces, the Second terminal are located at the top of the coping plate and insulate so as to the first insulating part and the coping plate, institute
It states second connecting portion to wear the second electrode hole and be fixedly connected with the Second terminal, the second connecting portion is set so as to enclosing
Sealing element and be isolated with the coping plate, the lower part of the second connecting portion is fixedly connected with the second connector, and described second connects
Fitting is electrically connected the second pole piece of secondary cell, and the second connecting portion is fixedly connected with position with second connector as institute
Sealing element is stated to be covered.
Secondary cell top cover of the invention is applicable to secondary cell, and secondary cell includes battery core, the shell for accommodating battery core
With secondary cell top cover above-mentioned, shell is sealed by secondary cell top cover.
Detailed description of the invention
Fig. 1 is the first perspective view of one embodiment of secondary cell top cover of the invention.
Fig. 2 is the second perspective view of one embodiment of secondary cell top cover of the invention.
Fig. 3 is the top view of one embodiment of secondary cell top cover of the invention.
Fig. 4 is the bottom view of one embodiment of secondary cell top cover of the invention.
Fig. 5 is the secondary cell top cover of Fig. 1 in the explosive view on a direction.
Fig. 6 is the secondary cell top cover of Fig. 1 in the explosive view on other direction.
Fig. 7 is Fig. 3 in the cross-sectional view in the direction A-A.
Fig. 8 is the enlarged drawing of encircled portion in Fig. 7.
Fig. 9 is a variation diagram of Fig. 8.
Figure 10 is another variation diagram of Fig. 8.
Figure 11 is the another variation diagram of Fig. 8.
Figure 12 is another variation diagram of Fig. 8.
Figure 13 is another variation diagram of Fig. 8.
Component label instructions
100- secondary cell top cover；1- coping plate；11/11a/11b- first electrode hole；13/13a/13b- second electrode
Hole；15- explosion-proof valve fixation hole；17- groove；2- first electrode unit；21- first terminal；The upper end 211- sub-portion；213- lower terminal
Portion；215- terminal stage portion；217/217`- riveted holes；23/23a/23b- first connecting portion；231/231`- platform part；233/
233`- stage portion；3- second electrode unit；31- Second terminal；33/33a/33b- second connecting portion；The second electricity of 331/331`-
Extreme platform part；4- liquid injection hole；The explosion-proof valve module of 5-；51- explosion-proof valve protective film；53- explosion-proof valve；The second insulating part of 6/6`-；7-
First connector；71- ontology；73- bending part；75- connection sheet；77- electrode perforating；The second connector of 7`-；71`- second connects
Fitting ontology；8/8`- sealing element；81- body part；83- lug boss；The first insulating part of 9/9`-；91- insulating part ontology；93- holds
Receive chamber；95- perforating；The first extension of 951-；The second extension of 97-；The gap 10-
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.It should be noted that usually secondary cell is vertical placement, the electrode unit of secondary cell top cover is stretched out to be connect with the external world
Side be top, the other side is lower section, and up and down direction is its short transverse.
Secondary cell top cover of the invention is applicable to secondary cell, and secondary cell includes secondary cell top cover 100, battery core
With the shell for accommodating battery core, the electrolyte of infiltration battery core is marked in shell, secondary cell top cover 100 will accommodate battery core and electrolyte
Shell be sealed.Referring to Fig.1~7, secondary cell top cover 100 includes coping plate 1, and the be arranged on coping plate 1
One electrode unit 2, second electrode unit 3 and explosion-proof valve module 5.Coping plate 1 is equipped with liquid injection hole 4, first electrode hole 11, explosion-proof
Valve fixation hole 15 and second electrode hole 13, explosion-proof valve module 5 includes the explosion-proof valve 53 being fixed on explosion-proof valve fixation hole 15, explosion-proof
The top of valve 53 is equipped with explosion-proof valve protective film 51.
Fig. 5~13 are combined first to illustrate the structure of 2 one end of first electrode unit first, first electrode unit 2 includes first end
Son 21 and first connecting portion 23, first terminal 21 are located at the top of coping plate 1 and insulate so as to the first insulating part 9 with coping plate 1,
First connecting portion 23 wears first electrode hole 11 and is fixedly connected with first terminal 21, and first connecting portion 23 and 1 electricity of coping plate are absolutely
Edge and the two are equipped with gap 10 in horizontal direction, and first connecting portion 23 is equipped with the platform part 231/231 for being located at 1 lower section of coping plate
` is equipped between platform part 231/231` and coping plate 1 and encloses the sealing element 8 for setting the first connector portion 23, platform part 231/231` branch
Sealing element 8 is supportted, and the edge of the one end of platform part 231/231` far from first connecting portion 23 is located in the orthographic projection on coping plate 1
(edge of the one end of platform part 231/231` far from first connecting portion 23 is in top cover in such as Fig. 8 and Figure 10 on the bottom surface of coping plate 1
The orthographic projection of piece 1 is as shown by arrows).Platform part 233/233` is located at the lower part of sealing element 8 and supporting sealing member 8, support sealing
The platform part 233/233` of part 8 can generate stronger compressing force to sealing element 8 and make the sealing effect of sealing element 8 more preferably.First
The lower part of interconnecting piece 23 is fixedly connected with the first connector 7, and the first connector 7 is electrically connected the first pole piece of secondary cell (in figure not
It shows).Sealing element 8 has body part 81 and upwardly extends the lug boss 83 formed by one end of body part 81, and body part 81
Between platform part 231/231` and coping plate 1, lug boss 83 is filled in gap 10 and enclosing and sets first connecting portion 23 and by first
Interconnecting piece 23 and coping plate 1 are isolated, and the first insulating part 9 partially protrudes into gap 10 and abuts the top of lug boss 83.
In order to improve the fixing connected between component, continue as shown in Fig. 5~13, first connecting portion 23 is two, is divided
Not Wei 23a and 23b, first electrode hole 11 also corresponds to two 11a and 11b, and the first insulating part 9 has insulating part ontology 91, absolutely
Edge part ontology 91 has the perforating 95 worn for first connecting portion 23a and 23b, and the edge of perforating 95 is i.e. in two first electricity
The first extension 951 is all downwardly extending at pole hole 11a and 11b, the first extension 951 is fitting to connection with coping plate 1, simultaneously
First extension 951 protrudes into gap 10 and abuts the top of lug boss 83, and two first connecting portions 23 may make first electrode
The conveyance capacity of unit 2 is stronger, and two first connecting portions 23 can also generate the effect for preventing first electrode unit 2 from rotating, the
One interconnecting piece 23 is fitting to connection by the first extension 951 with coping plate 1, and first connecting portion 23 and coping plate can be further enhanced
The fixing of 1 connection.First insulating part 9 is additionally provided with the second extension 97, the second extension between two the first extensions 951
97 are fitting to connection with coping plate 1, and then further strengthen anti-rotation and connection fixing.Prolong upwards at the edge of insulating part ontology 91
It stretches and encloses and be set as accommodating chamber 93, the first insulating part 9 is fitting to connection by accommodating chamber 93 and first terminal 21, can by being fitting to connection
So that the first insulating part 9 connect with first terminal 21 it is more firm, and can also be under the premise of making full use of the useful space to first
The side of terminal 21 is electrically insulated and is isolated.
With upper end sub-portion 211 and the lower end sub-portion 213 being connected, the size of lower end sub-portion 213 is less than upper first terminal 21
To form terminal stage portion 215, the first insulating part 9 connects portion of terminal 211 by the way that accommodating chamber 93 is chimeric with terminal stage portion 215
It connects.The upper end of first connecting portion 23 carries out riveting fixation, first connecting portion 23 by riveted holes 217/217` with first terminal 21
Lower end be fixedly connected with the first connector 7, the first connector 7 have ontology 71, bending part 73 and connection sheet 75, ontology 71 with
First connecting portion 23 is fixedly connected, and one end of ontology 71 is bent to form bending part 73, and bending part 73 is downwardly extending electrical connection
The connection sheet 75 of first pole piece, is equipped with the second insulating part 6 between ontology 71 and coping plate 1, this first connector 7 is used in M6T
, can be convenient for the connection between the first connector 7 and the first pole piece using this structure in secondary cell, and conveyance capacity is strong.
The structure of first connecting portion 23 can be to be a variety of, and as shown in Fig. 8~9, sealing element 8 is covered on coping plate 1 orthographic projection
Lid platform part 231/231` is greater than platform part 231/ in the size of horizontal direction in the orthographic projection on coping plate 1, i.e. sealing element 8
231` is fitting to connection in the size of horizontal direction, platform part 231/231` in the first connector 7.That is the ontology of the first connector 7
Holding tank is formed on 71 for platform part 231/231` insertion, and the first connector is directly fitted and fixed with by platform part 231/231`
7, the overall height dimension of secondary cell top cover 100 can be made to reduce, and first connecting portion 23 and first can be made by chimeric mode
Associativity between connector 7 is stronger.In order to avoid the first connector 7 in secondary cell Reusability during because shake etc.
Reason influences the reliability connected toward tenesmus, as shown in figure 8, first connecting portion 23 is also set in the lower section of platform part 231/231`
There is stage portion 233/233`, and stage portion 233/233` covers platform part 231/231` in top cover in the orthographic projection on coping plate 1
Orthographic projection on piece 1, i.e. stage portion 233/233` are greater than platform part 231/231` in horizontal direction in the size of horizontal direction
Size, the first connector 7 are arranged in stage portion 233/233`.
First connecting portion 23 can also be other structures, and as shown in Figure 10~13, platform part 231/231` is on coping plate 1
Orthographic projection cover sealing element 8, i.e. platform part 231/231` in horizontal direction size be greater than sealing element 8 in the ruler of horizontal direction
Very little, platform part 231/231` is located at the top of the first connector 7, and the lower part of first connecting portion 23 is fixedly connected with the first connector 7,
The lower end of first connecting portion 23 can with the first connector 7 be fitting to connection after carry out laser welding, thus can make laser welding into
More reliablely capable, more preferably, in order to increase the area of laser welding, the lower part of first connecting portion 23 can also for fixing after fixing
It is set as horn-like, as shown in figure 11.Further as shown in figure 12, the upper end of first connecting portion 23 and the riveting of first terminal 21 are solid
Fixed, the lower end of first connecting portion 23 is equipped with stage portion 233/233`, and first connecting portion 23 passes through stage portion 233/233` and first
Connector 7 is fitting to connection, and may make that the connection of first connecting portion 23 and first terminal 21 is more firm by riveting fixation, and first
Interconnecting piece 23 and the first connector 7 are fitting to connection, and can avoid the first connector 7 during the Reusability of secondary cell because shaking
The reasons such as dynamic influence the reliability connected toward tenesmus.Or, further as shown in figure 13, the top concave shaped of the first connector 7
At groove (not shown), groove is fixed on by laser fuU penetration welding in the lower part of first connecting portion 23, passes through laser fuU penetration welding
It is fixed, rather than through-hole is set on the first connector 7 so that first connecting portion 23 is worn, connection fixing can be made stronger.
Second electrode unit 3 can be the structure similar with first electrode unit 1 comprising Second terminal 31 and the second connection
Portion 33, Second terminal 31 are located at the top of coping plate 1 and insulate so as to the first insulating part 9` and coping plate 1, second connecting portion 33
It wears second electrode hole 13 and is fixedly connected with Second terminal 31, second connecting portion 33 is electrically insulated with coping plate 1 and the two is in water
Square it being equipped with gap 10 upwards, second connecting portion 33 is equipped with the second electrode end platform part 331/331` for being located at the lower section of coping plate 1,
The sealing element 8` for enclosing the second connector portion 33 that sets, the second electricity are equipped between second electrode end platform part 331/331` and coping plate 1
Extreme platform part 331/331` supporting sealing member 8`, and second electrode end platform part 331/331` far from second connecting portion 33 one
The edge at end is on the bottom surface that the orthographic projection on coping plate 1 is located at coping plate 1.In order to improve the fixing connected between component,
Likewise, second connecting portion 33 is two, respectively 33a and 33b, second electrode hole 13 also correspond to two 13a and 13b, the
Two interconnecting piece 33a and 33b all wear sealing element 8` and are fixed on second electrode hole 13a and 13b.
First electrode unit of the invention, which can refer to positive pole unit, also can refer to negative pole unit, and corresponding, second electrode unit can
Criticizing pole unit also can refer to negative pole unit, specifically, second electrode unit is cathode when first electrode unit is positive pole unit
Unit；When first electrode unit is negative pole unit, second electrode unit is positive pole unit.In present embodiment Fig. 7 with
First electrode unit 2 is positive pole unit, and second electrode unit 3 is the interconnecting piece and connector of negative pole unit for negative pole unit
It is usually made of copper material, the interconnecting piece and connector of positive pole unit are usually made of aluminum material, and the conveyance capacity of copper is strong, therefore sets
It sets 23 lower end of the positive pole unit end first connecting portion height chimeric with the first connector 7 and connects 33 lower ends than negative pole unit end second
The height chimeric with the second connector 7` is big, and the height of the ontology 71 of connector 7 is than the height of the second connector ontology 71`
Greatly.
It should be added that in the use process of secondary cell, in order to solve overcharging and puncturing for secondary cell
Problem, it will usually make positive pole unit and coping plate conduct and form external short circuit, thus first electrode unit 2 can be arranged at this time
For negative pole unit, and second electrode unit 3 is positive pole unit, and the two is similar structure, but in order to realize positive pole unit in
First insulating part 9` can be passed through the injected plastics material injection molding that conductive particle is added by conducting for coping plate, and conductive particle can be
Conductive carbon or conductive metal.Certainly, in order to simplify technique, also pole can be for only including the structure of positive terminal, anode for positive pole unit
Terminal is fixedly welded on coping plate 1 or constitutes positive terminal from coping plate 1 to the direction protrusion far from battery core.
It should be pointed out that the above specific embodiment is only illustrative of the invention and is not intended to limit the scope of the invention,
After having read the present invention, those skilled in the art each fall within power appended by the application to the modification of various equivalent forms of the invention
Benefit requires the range limited.
Claims (10)
1. a kind of secondary cell top cover, comprising: coping plate and the first electrode unit and second electrode for being set to the coping plate
Unit, the coping plate have first electrode hole, which is characterized in that the first electrode unit includes that first terminal and first connect
Socket part, the first terminal are located at the top of the coping plate and insulate so as to the first insulating part and the coping plate, and described the
One interconnecting piece wears the first electrode hole and is fixedly connected with the first terminal, the first connecting portion and the coping plate
Electrical isolation and the two in horizontal direction be equipped with gap, the first connecting portion be equipped be located at the coping plate below platform
Portion is equipped between the platform part and the coping plate and encloses the sealing element for setting first connector portion, the platform part support
The sealing element, and the edge of the one end of the platform part far from the first connecting portion is in the orthographic projection position on the coping plate
In on the bottom surface of the coping plate.
2. secondary cell top cover according to claim 1, which is characterized in that first insulating part is connected to the sealing
The top of part.
3. secondary cell top cover according to claim 2, the sealing element has body part and by the one of the body part
End upwardly extends the lug boss to be formed, and the body part between the platform part and the coping plate, fill out by the lug boss
It fills and sets the first connecting portion in the gap and enclosing and the first connecting portion and the coping plate are isolated.
4. secondary cell top cover according to claim 3, which is characterized in that first dielectric insulator segments protrude into the sky
In gap and abut the top of the lug boss.
5. secondary cell top cover according to claim 1, which is characterized in that the platform part on the coping plate just
Projection covers the sealing element in the orthographic projection on the coping plate, and the lower part of the first connecting portion is fixedly connected and secondary electricity
First connector of the first pole piece electrical connection in pond, the platform part are located at the top of first connector.
6. secondary cell top cover according to claim 5, which is characterized in that the lower end of the first connecting portion is equipped with step
Portion, the first connecting portion is fitting to connection by the stage portion and first connector, or, first connector is upper
Portion is recessed groove, and the groove is fixed on by laser fuU penetration welding in the lower part of the first connecting portion.
7. secondary cell top cover according to claim 1, which is characterized in that the sealing element on the coping plate just
Projection covers the platform part in the orthographic projection on the coping plate, and the lower part of the first connecting portion is fixedly connected and secondary electricity
First connector of the first pole piece electrical connection in pond, the platform part are fitting to connection in first connector.
8. secondary cell top cover according to claim 7, which is characterized in that the first connecting portion is in the platform part
Lower section is additionally provided with stage portion, and the stage portion covers the platform part on the coping plate in the orthographic projection on the coping plate
Orthographic projection, first connector is arranged in the stage portion.
9. secondary cell top cover according to claim 1, which is characterized in that the first connecting portion is two, described the
One electrode hole also corresponds to two, and first insulating part is all downwardly extending first at two first electrode holes and prolongs
Extending portion, first extension and the coping plate are fitting to connection.
10. secondary cell top cover according to claim 9, which is characterized in that first insulating part is in two described
The second extension is additionally provided between one extension, second extension and the coping plate are fitting to connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443706.8A CN110176560A (en) | 2019-05-24 | 2019-05-24 | Secondary cell top cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443706.8A CN110176560A (en) | 2019-05-24 | 2019-05-24 | Secondary cell top cover |
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| Publication Number | Publication Date |
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| CN110176560A true CN110176560A (en) | 2019-08-27 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910443706.8A Pending CN110176560A (en) | 2019-05-24 | 2019-05-24 | Secondary cell top cover |
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Effective date of registration: 20240605 Address after: Fengshou Industrial Park, high tech Industrial Zone, Wannian County, Shangrao City, Jiangxi Province Applicant after: Jiangxi baisili New Energy Technology Co.,Ltd. Country or region after: China Address before: 523809 GuanChang Road, Lianping village, Dalingshan Town, Dongguan City, Guangdong Province Applicant before: DONGGUAN BAISILI NEW ENERGY TECHNOLOGY CO.,LTD. Country or region before: China |
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