CN114583402A - Battery and vehicle with same - Google Patents
Battery and vehicle with same Download PDFInfo
- Publication number
- CN114583402A CN114583402A CN202210261914.8A CN202210261914A CN114583402A CN 114583402 A CN114583402 A CN 114583402A CN 202210261914 A CN202210261914 A CN 202210261914A CN 114583402 A CN114583402 A CN 114583402A
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- battery
- positive pole
- post
- positive
- positive electrode
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- 239000012212 insulator Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 12
- 238000003466 welding Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Images
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- 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
- H01M50/531—Electrode connections inside a battery 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Inorganic Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of batteries, in particular to a battery and a vehicle with the battery, and aims to solve the problems that in the prior art, the process of connecting a pole post and a pole lug by adopting a current collecting disc is complex, the energy density of a battery cell is reduced because the space in a shell needs to be occupied, and the like. For this purpose, the positive pole lug of the battery is electrically connected with the battery core of the battery, the first end of the positive pole column of the battery penetrates through the top cover and extends into the shell, two ends of the flexible connecting piece are respectively electrically connected with the first end of the positive pole column and the positive pole lug, and the length of the flexible connecting piece is larger than the distance between the first end of the positive pole column and the positive pole lug. The invention realizes the electric connection of the positive pole post and the positive pole lug through the flexible connecting piece, and the flexible connecting piece can not be pulled to the connection part of the positive pole post and the positive pole lug during vibration, thereby ensuring the stability of the battery. The flexible connecting piece does not need to additionally occupy the space in the shell, so that the electric quantity density of the battery cell is improved, and the performance of the battery is improved.
Description
Technical Field
The invention relates to the technical field of batteries, and particularly provides a battery and a vehicle with the battery.
Background
With the development of modern society and the enhancement of environmental awareness of people, more and more devices select a lithium ion battery as a power supply, for example, a new energy automobile, which provides a wide space for the application and development of the lithium ion battery. The existing lithium ion battery generally comprises a shell, an anode pole, an anode current collecting disc, a cover plate, a cathode current collecting disc, an electric core and other assemblies, wherein the anode current collecting disc, the cathode current collecting disc and the electric core are arranged inside the shell, and the cover plate is covered on the shell to play a role in sealing. The positive pole column penetrates through the cover plate to be connected with the positive current collecting disc, and the positive current collecting disc and the battery cell play a role in conducting current.
However, taking the positive current collecting disc as an example, the positive current collecting disc and the positive pole post, and the positive current collecting disc and the positive pole tab are generally welded together twice, and then the positive pole post and the positive pole tab can be electrically connected through the positive current collecting disc, which is a tedious process. In addition, the positive current collecting plate needs to occupy the internal space of the shell, and the space in the shell is limited, so that the energy density of the battery cell is influenced, and the performance of the lithium ion battery is influenced.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
The invention aims to solve the technical problems, namely, the problems that in the prior art, the process of connecting a pole post and a pole lug by adopting a current collecting disc is complicated, and the energy density of a battery cell is reduced due to the fact that the current collecting disc occupies the space in a shell.
In a first aspect, the present invention provides a battery, which includes a housing, a top cover disposed on the housing, and an electric core and a positive electrode tab disposed in the housing, wherein the positive electrode tab is electrically connected to the electric core, the battery further includes a positive electrode post and a flexible connecting member, a first end of the positive electrode post penetrates through the top cover and extends into the housing, a first end of the flexible connecting member is electrically connected to a first end of the positive electrode post, a second end of the flexible connecting member is electrically connected to the positive electrode tab, and a length of the flexible connecting member is greater than a distance between the first end of the positive electrode post and the positive electrode tab.
In the preferred technical scheme of above-mentioned battery, the battery still includes first insulating part, first insulating part set up in the casing, the first end of anodal utmost point post passes in proper order the top cap with behind the first insulating part with the first end of flexible connectors is connected, at least partly of first insulating part is located the first end of anodal utmost point post with between the top cap.
In the preferred technical scheme of above-mentioned battery, anodal utmost point post include the column segment and set up respectively in first end and the second end at column segment along its axial both ends, when installing, the column segment passes the top cap, the first end of anodal utmost point post with the second end of anodal utmost point post is located respectively the both sides of its thickness direction are followed to the top cap.
In the preferable technical scheme of the battery, the first insulating part comprises a first base body and a first flanging arranged along the circumferential direction of the outer edge of the first base body, when the first insulating part is installed, the first base body is located between the top cover and the first end of the positive pole, and the first flanging is coated on the first end of the positive pole and the circumferential outer side of the positive pole lug.
In the preferable technical scheme of the battery, the battery further comprises a second insulating part, the column section penetrates through the second insulating part, at least one part of the second insulating part is arranged between the second end of the positive pole column and the top cover, and the inner edge of the second insulating part is abutted to the outer wall of the column section.
In the preferable technical scheme of the battery, the second insulating part comprises a second base body and a second flanging arranged along the circumferential direction of the inner edge of the second base body, when the second insulating part is installed, the column section penetrates through the second base body, the second base body is arranged between the top cover and the second end of the positive pole, and the second flanging is arranged between the column section and the top cover.
In the preferred technical scheme of the above battery, the battery further comprises a negative electrode tab arranged in the shell, the negative electrode tab is electrically connected with the battery core, the negative electrode tab is connected with the top cover, and the negative electrode tab and the positive electrode tab are arranged at the same axial end of the battery core.
In the preferable technical scheme of the battery, a concave part is inwards recessed at the position of the top cover close to the negative pole lug, and the concave part is connected with the negative pole lug.
In a preferred embodiment of the above battery, the case has a cylindrical structure; and/or the flexible connector is an aluminum wire.
According to the technical scheme, the battery comprises a shell, a top cover arranged on the shell, and a battery cell and a positive electrode lug which are arranged in the shell, wherein the positive electrode lug of the battery is electrically connected with the battery cell, the first end of a positive electrode pole column penetrates through the top cover and extends into the shell, the first end of a flexible connecting piece is electrically connected with the first end of the positive electrode pole column, the second end of the flexible connecting piece is electrically connected with the positive electrode lug, and the length of the flexible connecting piece is larger than the distance between the first end of the positive electrode pole column and the positive electrode lug. Therefore, the electric connection between the positive pole post and the positive pole lug is realized through the flexible connecting piece. When the equipment is good, the flexible connection piece has surplus part, so when receiving vibration, just can not drag the junction of this flexible connection piece and the first end of anodal utmost point post, flexible connection piece and anodal utmost point ear to just also can ensure the continuation of electricity connection between anodal utmost point post and the anodal utmost point ear, ensure the stability of battery. Simultaneously, because flexible connectors has better pliability, when the equipment, with abundant flexible connectors coil the space between top cap and anodal utmost point ear can, need not additionally to occupy the space in the casing to be favorable to improving the electric quantity density of electric core, promote the performance of battery.
Further, the battery also comprises a first insulating part and a second insulating part, the first insulating part is arranged in the shell, the first end of the positive pole column sequentially penetrates through the top cover and the first insulating part and then is connected with the first end of the flexible connecting part, and at least one part of the first insulating part is positioned between the first end of the positive pole column and the top cover. The column section passes through the second insulating part, at least one part of the second insulating part is arranged between the second end of the anode pole and the top cover, and the inner edge of the second insulating part is abutted to the outer wall of the column section. Through such a setting mode, just also can guarantee the insulating nature between anodal utmost point post and the top cap better, avoid the inside short circuit of battery, strengthen the reliability of battery.
Furthermore, the battery also comprises a negative pole lug, the negative pole lug is electrically connected with the battery core and is connected with the top cover, and the negative pole lug and the positive pole lug are arranged at the same axial end of the battery core. That is to say, the negative pole of the battery of this application is top cap, casing and negative pole utmost point ear, and the positive pole of battery is anodal utmost point post and anodal utmost point ear, has formed communicating positive pole and negative pole of circuit promptly in the battery, just so can ensure the steady operation of battery. With negative pole utmost point ear and anodal utmost point ear setting along its axial same end at electric core, it is more convenient when carrying out the frock like this, only need from electric core with the end carry out the wiring can. In addition, through the setting of first insulating part, also can separate negative pole utmost point ear and anodal utmost point ear better, avoid influencing each other between anodal utmost point ear and the negative pole utmost point ear to ensure the steady operation of battery better.
The second aspect of the invention also provides a vehicle equipped with the battery according to any one of the preceding aspects.
It should be noted that the vehicle has all the technical effects of the foregoing battery, and details are not repeated herein.
Drawings
The battery and the vehicle having the same of the present invention will be described with reference to the accompanying drawings, in which:
fig. 1 is a structural view of a battery according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the a-a plane of a battery according to an embodiment of the present invention;
FIG. 3 is an enlarged view of detail B of FIG. 2;
fig. 4 is an exploded view (one) of a battery according to an embodiment of the present invention;
fig. 5 is an exploded view (two) of a battery according to an embodiment of the present invention.
List of reference numerals:
1. a housing; 2. a top cover; 21. a recessed portion; 3. an electric core; 4. a positive electrode tab; 5. a positive pole column; 51. a first end of the positive pole; 52. a second end of the positive pole; 53. a column section; 6. a flexible connector; 7. a first insulating member; 71. a first substrate; 72. a first flanging; 8. a second insulating member; 81. a second substrate; 82. second flanging; 9. and a negative pole tab.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, it should be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" in the description of the present application are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically connected or connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
At present, the process of realizing the electric connection between the positive pole and the positive pole lug through the positive current collecting disc is complex, and the positive current collecting disc needs extra occupied space, so that the energy density of a battery core can be influenced, and the performance of the battery is further influenced. Therefore, the battery can conveniently realize the connection of the positive pole post and the positive pole lug through the flexible connecting piece, and the length of the flexible connecting piece is larger than the distance between the first end of the positive pole post and the positive pole lug, so that the stability of the battery can be ensured, and the performance of the battery can be improved.
A possible implementation of the battery of the invention is explained below in connection with fig. 1 to 5.
As shown in fig. 1 to 5 and according to the orientation shown in fig. 2, the battery includes a casing 1, a top cover 2 disposed on the casing 1, and a battery core 3 and a positive electrode tab 4 disposed in the casing 1, wherein the casing 1 is substantially a cylindrical structure with one open end and one sealed end. The battery cell 3 is substantially cylindrical and is disposed in the casing 1. The positive electrode tab 4 has a substantially semicircular structure, and the positive electrode tab 4 is electrically connected to the battery cell 3. The outer diameter of the top cover 2 is approximately equal to the inner diameter of the cross section of the shell 1, when the top cover 2 is installed at the opening end of the shell 1, and then the outer edge of the top cover 2 is welded with the opening end of the shell 1 by means of laser welding, so that the top cover 2 is connected with the shell 1. When the device is installed, the outer edge of the top cover 2 is connected with the inner wall of the shell 1. In this way, a relatively closed space is also formed by the cover 2 and the housing 1, and the battery cell 3 and the positive electrode tab 4 arranged in the housing 1 are isolated from the external environment. Obviously, the connection between the top cover 2 and the housing 1 can also be realized by welding methods such as ultrasonic welding, wave welding and the like.
The top cover 2 may be provided at the open end of the housing 1, for example, the top cover 2 may include a body having a substantially disk-shaped structure and an outer diameter substantially similar to an outer diameter of the cross section of the housing 1, and an outer edge of the body may be provided with a folded edge in a circumferential direction. When assembling, the body sets up in the open end of casing 1, the hem sets up in casing 1 and is close to the outside of its open end, and the bottle lid that is similar to with mineral water bottle establishes on mineral water bottle, and the outer fringe that keeps away from the body with the hem after covering is welded can with the outer wall of casing 1. Obviously, the housing 1 may not be configured as a cylindrical structure, but may be configured as other possible shapes with an oval, rectangular, square, triangular, etc. cross section. On the premise of not deviating from the principle of the present application, a person skilled in the art can flexibly select the specific setting forms of the casing 1 and the top cover 2 according to a specific application scenario, as long as the battery cell 3 and the positive electrode tab 4 can be set in the casing 1, and the stable operation of the battery is ensured.
The battery further comprises a positive pole post 5 and a flexible connecting piece 6, wherein the first end 51 of the positive pole post penetrates through the top cover 2 and extends into the shell 1, the first end of the flexible connecting piece 6 is electrically connected with the first end 51 of the positive pole post through a bonding process, and the second end of the flexible connecting piece 6 is electrically connected with the positive pole lug 4 through the bonding process. And the length of the flexible connector 6 is greater than the distance between the first end 51 of the positive pole post and the positive pole tab 4. Like this, just also can realize anodal utmost point post 5 and anodal utmost point ear 4 electricity through flexible connection spare 6 to, can realize the both ends of flexible connection spare 6 and the first end 51 of anodal utmost point post and the electricity of anodal utmost point ear 4 and be connected in same frock procedure, simplified the frock procedure. When assembling well, because flexible connectors 6's length is longer, then will have partly surplus, like this when receiving the vibration, relative displacement can take place between anodal utmost point post 5 and the anodal utmost point ear 4, at this in-process, even if take place to pull, also pull surplus flexible connectors 6, and can not pull flexible connectors 6 and anodal utmost point post 5, the junction of flexible connectors 6 and anodal utmost point ear 4, just so can not destroy flexible connectors 6 and anodal utmost point post 5, the connection status between meat fragrant connecting piece and the anodal utmost point ear 4, thereby just also can ensure the continuation of electricity connection between anodal utmost point post 5 and the anodal utmost point ear 4, ensure the stability of battery. And, because flexible connectors 6 have better pliability, the surplus part can coil the space between top cap 2 and anodal utmost point ear 4, need not additionally to occupy the space in casing 1, just so can effectively utilize the space in casing 1 as far as possible to be favorable to improving the electric quantity density of electric core 3, promote the performance of battery.
It should be noted that the bonding process includes electrostatic bonding, thermal bonding, and "composite" bonding, and a person skilled in the art can flexibly select a specific type of the bonding process according to a specific application scenario as long as the two ends of the flexible connecting member 6 can be electrically connected to the first end 51 of the positive electrode post and the positive electrode tab 4.
In a possible embodiment, the flexible connecting member 6 is an aluminum wire, and two ends of the aluminum wire are respectively electrically connected with the positive electrode post 5 and the positive electrode tab 4, so that the electrical connection between the positive electrode post 5 and the positive electrode tab 4 can be realized. It should be noted that, on the premise of not deviating from the principle of the present application, a person skilled in the art may flexibly select the specific number, length, etc. of the aluminum wires based on the comprehensive consideration of the cost of the battery, the performance of the battery, etc., as long as the electrical connection between the positive electrode post 5 and the positive electrode tab 4 can be ensured and the space in the housing 1 is not additionally occupied. Obviously, the flexible connecting element 6 may also be a wire structure made of a metal with good ductility, such as copper, platinum, gold, etc., or a wire structure made of a conductive material, such as conductive plastic, conductive rubber, etc.
As shown in fig. 2, 3 and 5, the positive pole 5 includes a column section 53, a first end and a second end, the column section 53 is substantially cylindrical, the first end 51 of the positive pole and the second end 52 of the positive pole are respectively disposed at two ends of the column section 53 along an axial direction thereof, the first end and the second end are both substantially circular bosses, and an outer diameter of the first end is larger than an outer diameter of the second end. The top cover 2 is provided with a through hole (not shown), and the outer diameters of the first end 51 of the positive pole column and the second end 52 of the positive pole column are both larger than the inner diameter of the through hole. When assembled, the column section 53 passes through the through hole, the first end 51 of the positive pole is located at the lower side of the top cover 2 along the thickness direction (i.e. the up-down direction in fig. 2), and the second end 52 of the positive pole is located at the upper side of the top cover 2 along the thickness direction (i.e. the up-down direction in fig. 2), so that the positive pole 5 can be prevented from being released from one side of the top cover 2, and the positive pole 5 can be more stably arranged on the battery.
The outer diameters of the first end 51 of the positive electrode post and the second end 52 of the positive electrode post may be substantially the same, and the outer diameter of the first end 51 of the positive electrode post may be smaller than the outer diameter of the second end 52 of the positive electrode post. The column section 53, the first end 51 of the positive electrode post and the second end 52 of the positive electrode post can also be provided in other forms, for example, the column section 53 has a cylindrical structure with a square cross section, the first end 51 of the positive electrode post and the second end 52 of the positive electrode post have a square structure, and the like. Of course, the positive electrode post 5 may only include the post section 53 and the first end 51 of the positive electrode post, in which case the positive electrode post 5 can also be stably disposed in the battery when mounted due to the blocking effect of the top cover 2. Without departing from the principle of the present application, a person skilled in the art can flexibly select a specific arrangement manner of the positive electrode post 5 according to a specific application scenario as long as the positive electrode post can be stably arranged on the battery.
As shown in fig. 2 to 5 and in the orientation shown in fig. 2, the battery further comprises a first insulating member 7, the first insulating member 7 being disposed within the case 1. The first insulator 7 includes a first base 71 and a first flange 72, and the first base 71 has a substantially semicircular configuration with a radial dimension slightly larger than that of the positive electrode tab 4. The first flange 72 extends downward along the outer periphery of the first base 71, so that the first insulating member 7 is formed into a substantially downward-turned hood-like structure. The first end 51 of the positive pole penetrates through the top cover 2 and the first base body 71 in sequence and then is connected with the first end of the flexible connecting piece 6. When the battery pack is installed, the first base body 71 is located between the top cover 2 and the first end 51 of the positive pole column, the first flanging 72 is coated on the first end 51 of the positive pole column and the circumferential outer side of the positive pole lug 4, and the lower side edge of the first flanging 72 is abutted to the battery cell 3. That is to say, the first end 51 and the positive electrode tab 4 of positive electrode post are all covered and established in first insulator 7, just so can also isolate the first end 51 and the positive electrode tab 4 of positive electrode post with external environment better, reach better insulating effect, avoid meeting the emergence of the condition of the inside short circuit of battery that leads to because of the first end 51 and the top cap 2 of positive electrode post.
The first insulating material 7 may include only the first base 71, and the first base 71 may ensure insulation between the first end 51 of the positive electrode terminal and the top cap 2. Of course, the first insulating member 7 may not be provided, and in this case, the distance between the first end 51 of the positive electrode terminal and the top cap 2 may be increased to avoid a short circuit caused by the two terminals. Without deviating from the principle of the present application, a person skilled in the art may flexibly select a specific setting of the first insulating member 7 according to a specific application scenario, as long as the occurrence of a short circuit caused by the connection of the first end 51 of the positive electrode post and the top cap 2 can be avoided.
As shown in fig. 1 to 5 and in the orientation shown in fig. 2, the battery further includes a second insulating member 8, the second insulating member 8 includes a second base 81 and a second flange 82, the second base 81 has a substantially annular configuration, and the second flange 82 extends downward along the circumferential direction of the inner edge of the second base 81. When the mounting is completed, the column section 53 penetrates through the second base 81, the second base 81 is located between the top cover 2 and the second end 52 of the positive pole, and the second flange 82 is clamped between the column section 53 and the through hole. Through the setting of second insulator 8 like this, just also can be better keep apart the second end 52 and the top cap 2 of anodal utmost point post to obtain better insulating effect, avoid meeting and leading to the condition of the inside short circuit of battery to take place because of the second end 52 and the post section 53 of anodal utmost point post meet with top cap 2. In addition, through the arrangement of the second flanging 82, the gap between the through hole in the top cover 2 and the column section 53 can be better sealed, the inside of the shell 1 is better isolated from the outside diameter, and the sealing performance of the battery is ensured.
It should be noted that the second insulating member 8 may also only include the second base 81, and when assembled, the second base 81 is disposed between the second end 52 of the positive electrode pole and the top cap 2, and the inner ring of the second base 81 abuts against the column section 53, in this case, the radial dimension of the inner ring of the second base 81 is smaller than the radial dimension of the through hole, and when assembled, a gap is formed between the column section 53 and the through hole, that is, the column section 53 does not contact with the top cap 2. When mounted, the gap between the post section 53 and the through hole is covered by the second substrate 81, so that the insulation and sealing can be achieved at the same time. Of course, the second insulating member 8 may not be provided, and in this case, a substantially cylindrical sealing member made of an insulating material such as rubber or plastic may be provided between the column section 53 and the through hole, so that the purpose of blocking the through hole can be achieved. At the same time, the height of the seal is made greater than the thickness of the top cover 2. When the terminal is installed, at least a part of the sealing element extends out of the outer side of the top cover 2 (i.e. the upper side of the top cover 2 in fig. 2), so that the second end 52 of the positive pole column does not directly contact with the upper surface of the top cover 2, and the occurrence of short circuit caused by the connection of the second end 52 of the positive pole column and the top cover 2 can be avoided. On the premise of not deviating from the principle of the present application, a person skilled in the art can flexibly select the specific setting of the second insulating member 8 according to a specific application scenario, as long as the situation that the second end 52 of the positive pole is connected with the top cover 2 to cause short circuit can be avoided, and the through hole on the top cover 2 can be plugged.
Through the above arrangement mode, namely, through the arrangement of the first insulating member 7 and the second insulating member 8, the occurrence of the internal short circuit of the battery caused by the connection of the positive pole post 5 and the top cover 2 can be better avoided.
The first insulating member 7 may be made of an insulating material such as ceramic, rubber, plastic, mica, or asbestos, and the second insulating member 8 may be made of a material having a certain sealing property and insulating properties such as rubber or plastic. Of course, the first insulating member 7 and the second insulating member 8 may be made of a non-insulating material, and then the surfaces of the first insulating member 7 and the second insulating member 8 may be coated with an insulating varnish, for example, the first insulating member 7 and the second insulating member 8 may be made of a metal such as copper, aluminum, and the like, and then the surfaces thereof may be coated with an insulating varnish, and the like. On the premise of not deviating from the principle of the present application, a person skilled in the art can flexibly select a specific arrangement manner of the first insulating member 7 and the second insulating member 8 according to a specific application scenario, as long as the first insulating member 7 can play an insulating role and the second insulating member 8 can give consideration to both insulating and sealing roles.
As shown in fig. 2 to 5, the battery further includes a negative electrode tab 9 provided in the case 1, the negative electrode tab 9 having a substantially semicircular structure, a lower side of the negative electrode tab 9 being electrically connected to the battery cell 3, and an upper side of the negative electrode tab 9 being in contact with the top cap 2. Like this, the negative pole of the battery of this application is top cap 2, casing 1 and negative pole utmost point ear 9, and the positive pole of battery is anodal utmost point post 5 and anodal utmost point ear 4, has formed communicating positive pole and negative pole of circuit promptly in the battery to just also can ensure the steady operation of battery.
According to the position shown in fig. 2, the positive electrode tab 4 and the negative electrode tab 9 are respectively arranged on the left side and the right side of the upper end of the battery cell 3, so that the positive electrode tab 4 and the negative electrode tab 9 are also arranged on the same axial end of the battery cell 3 (namely, the upper end of the battery cell 3 in fig. 2), and therefore the tool is more convenient to assemble, and only the wiring is required to be carried out from the same end of the battery cell 3. Meanwhile, based on the statement above, the first insulating part 7 is buckled at the first end 51 of the positive pole post and the outer side of the positive pole tab 4, so that the negative pole tab 9 and the positive pole tab 4 can be better separated through the arrangement of the first insulating part 7, the mutual influence between the positive pole tab 4 and the negative pole tab 9 is avoided, and the stable operation of the battery is better ensured. Obviously, the positive electrode tab 4 and the negative electrode tab 9 may be respectively disposed at both ends of the battery cell 3 in the axial direction thereof.
As shown in fig. 2 to 5, a recessed portion 21 is recessed inward of the top cap 2 at a position near the negative electrode tab 9, and the recessed portion 21 has a substantially rectangular shape. The depressed part 21 is connected with the negative pole tab 9, and when the battery is installed, the depressed part 21 and the negative pole tab 9 are welded in a penetration welding mode to ensure continuous connection of the two, so that the stable operation of the battery is ensured.
Note that, instead of providing the recessed portion 21, the top cover 2 may be provided with a through hole at a position close to the negative electrode tab 9, and then the through hole and the negative electrode tab 9 may be welded by welding such as laser welding, ultrasonic welding, wave welding, or the like, so that the top cover 2 and the negative electrode tab 9 can be connected.
In summary, in the preferred embodiment of the present invention, the two ends of the flexible connecting member 6 are respectively connected to the first end 51 of the positive electrode post and the positive electrode tab 4, and the length of the flexible connecting member 6 is greater than the distance between the first end 51 of the positive electrode post and the positive electrode tab 4, so that the positive electrode post 5 and the positive electrode tab 4 can be electrically connected to each other, and when the flexible connecting member 6 and the positive electrode post 5, and the flexible connecting member 6 and the positive electrode tab 4 are vibrated, the connection between the positive electrode post 5 and the positive electrode tab 4 can be maintained, and the stability of the battery can be ensured. Meanwhile, the flexible connecting piece 6 does not need to additionally occupy the space in the shell 1, so that the electric quantity density of the battery core 3 is improved, and the performance of the battery is improved. Through the setting of first insulator 7 and second insulator 8 to can ensure the insulating nature between positive pole post 5 and top cap 2, and can also ensure the leakproofness of battery through the setting of second insulator 8, thereby ensure the stability of battery better. Through setting up negative pole utmost point ear 9 and anodal utmost point ear 4 and meeting at the same one end of electric core 3, the depressed part 21 of top cap 2 with negative pole utmost point ear 9 to the communicating positive pole and the negative pole of circuit have been formed in the battery, and can avoid anodal utmost point ear 4 and negative pole utmost point ear 9 to influence each other through setting up of first insulator 7, thereby just also can ensure the steady operation of battery.
Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A battery is characterized in that the battery comprises a shell, a top cover arranged on the shell, and an electric core and a positive electrode tab which are arranged in the shell, wherein the positive electrode tab is electrically connected with the electric core,
the battery also comprises a positive pole column and a flexible connecting piece, the first end of the positive pole column penetrates through the top cover and extends into the shell, the first end of the flexible connecting piece is electrically connected with the first end of the positive pole column, the second end of the flexible connecting piece is electrically connected with the positive pole lug,
the length of the flexible connecting piece is larger than the distance between the first end of the positive pole post and the positive pole lug.
2. The battery of claim 1, further comprising a first insulating member disposed within the housing, wherein the first end of the positive terminal post sequentially passes through the top cap and the first insulating member and then is connected to the first end of the flexible connector, and at least a portion of the first insulating member is located between the first end of the positive terminal post and the top cap.
3. The battery of claim 2, wherein the positive pole post comprises a post section, and a first end and a second end respectively disposed at two axial ends of the post section, and when the battery is mounted, the post section passes through the top cover, and the first end of the positive pole post and the second end of the positive pole post are respectively disposed at two sides of the top cover along the thickness direction.
4. The battery of claim 3, wherein the first insulating member includes a first base and a first flange circumferentially disposed along an outer edge of the first base, and when installed, the first base is located between the top cap and the first end of the positive electrode tab, and the first flange covers the first end of the positive electrode tab and a circumferential outer side of the positive electrode tab.
5. The battery of claim 3, further comprising a second insulator through which the post section passes, at least a portion of the second insulator being disposed between the second end of the positive terminal post and the top cap, and an inner edge of the second insulator abutting an outer wall of the post section.
6. The battery of claim 5, wherein the second insulator includes a second base and a second flange circumferentially disposed along an inner edge of the second base, and when installed, the post segment passes through the second base, the second base is disposed between the cap and the second end of the positive terminal, and the second flange is disposed between the post segment and the cap.
7. The battery of claim 1, further comprising a negative tab disposed in the housing, the negative tab being electrically connected to the cell, the negative tab being connected to the top cap, and the negative tab and the positive tab being disposed at a same axial end of the cell.
8. The battery of claim 7 wherein a recess is recessed into the top cover adjacent the negative tab, the recess being connected to the negative tab.
9. The battery of claim 1, wherein the housing is a cylindrical structure; and/or
The flexible connecting piece is an aluminum wire.
10. A vehicle characterized in that it comprises a battery according to any one of the preceding claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210261914.8A CN114583402A (en) | 2022-03-16 | 2022-03-16 | Battery and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210261914.8A CN114583402A (en) | 2022-03-16 | 2022-03-16 | Battery and vehicle with same |
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| CN114583402A true CN114583402A (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210261914.8A Pending CN114583402A (en) | 2022-03-16 | 2022-03-16 | Battery and vehicle with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425343A (en) * | 2022-09-08 | 2022-12-02 | 宁夏宝丰昱能科技有限公司 | Battery with a battery cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969477A (en) * | 2012-11-09 | 2013-03-13 | 中航锂电（洛阳）有限公司 | Lithium ion battery and tab and pole connecting pieces thereof |
| CN106207269A (en) * | 2016-08-29 | 2016-12-07 | 宁德时代新能源科技股份有限公司 | Battery with a battery cell |
| CN113346201A (en) * | 2021-05-21 | 2021-09-03 | 湖北亿纬动力有限公司 | Cylindrical battery, battery module and battery pack |
| CN215644892U (en) * | 2021-05-26 | 2022-01-25 | 苏州宇量电池有限公司 | Flexible current collector structure and multi-tab battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969477A (en) * | 2012-11-09 | 2013-03-13 | 中航锂电（洛阳）有限公司 | Lithium ion battery and tab and pole connecting pieces thereof |
| CN106207269A (en) * | 2016-08-29 | 2016-12-07 | 宁德时代新能源科技股份有限公司 | Battery with a battery cell |
| CN113346201A (en) * | 2021-05-21 | 2021-09-03 | 湖北亿纬动力有限公司 | Cylindrical battery, battery module and battery pack |
| CN215644892U (en) * | 2021-05-26 | 2022-01-25 | 苏州宇量电池有限公司 | Flexible current collector structure and multi-tab battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115425343A (en) * | 2022-09-08 | 2022-12-02 | 宁夏宝丰昱能科技有限公司 | Battery with a battery cell |
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