CN113922005A - Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure - Google Patents

Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure Download PDF

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Publication number
CN113922005A
CN113922005A CN202111301149.XA CN202111301149A CN113922005A CN 113922005 A CN113922005 A CN 113922005A CN 202111301149 A CN202111301149 A CN 202111301149A CN 113922005 A CN113922005 A CN 113922005A
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CN
China
Prior art keywords
post
capacity battery
casing
pole
heat
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Pending
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CN202111301149.XA
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Chinese (zh)
Inventor
刘毅
雷政军
郑高峰
杨战军
张三学
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Shaanxi Olympus Power Energy Co Ltd
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Shaanxi Olympus Power Energy Co Ltd
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Priority to CN202111301149.XA priority Critical patent/CN113922005A/en
Publication of CN113922005A publication Critical patent/CN113922005A/en
Pending legal-status Critical Current

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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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • 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
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals 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
    • H01M50/50—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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention provides a high-capacity battery with a pole connected with a shell and a high-capacity battery series connection structure, which belong to the technical field of energy storage batteries. When a plurality of polar columns are connected in series with a high-capacity battery connected with the shell, the polar columns can be connected through the polar column bodies extending to the outer side of the side wall of the shell, electric wires are not needed for connection, and the problems of winding of the electric wires and multiple wire ends are avoided; meanwhile, the pole has larger overcurrent, the circulation of current on two adjacent high-capacity batteries can be completely met, and the problem of overburning can not occur.

Description

Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure
Technical Field
The invention belongs to the technical field of energy storage batteries, and relates to a large-capacity battery series connection technology, in particular to a large-capacity battery with a pole connected with a shell and a large-capacity battery series connection structure.
Background
The lithium ion battery as a new energy secondary battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety performance, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, power supplies for electric vehicles and the like.
Especially under the current large background of energy conservation and emission reduction and carbon neutralization, the demand of the energy storage field on the lithium battery is more short supply and demand. At present, most lithium batteries applied to the field of energy storage are in the form of battery packs and pack boxes. The battery pack or pack box needs a large amount of single batteries, is complex in circuit connection, has many functional accessory configuration requirements, and is easy to cause safety accidents once the heat dissipation control of the batteries is poor. The capacity of monomer large capacity lithium cell is equivalent to a battery module or Pack case, can carry out the series-parallel connection and use, connects simply conveniently, can directly carry out the heat dissipation design to battery body simultaneously, has strengthened battery body's security. Therefore, the high-capacity single lithium battery has important significance for the application of energy storage.
The large-capacity battery has overlarge single capacity, and the heat collection of the battery core is serious in the operation process, if the heat collection is not dispersed in time or serious safety accidents are caused. Meanwhile, the large overcurrent of the large-capacity battery requires that the pole has enough overcurrent area, so that the pole of the battery has large volume and has high requirements on the welding process of the pole lug and the pole.
The utility model with patent number 2020208925177 discloses a high-safety large-capacity battery, which comprises a shell, a bottom plate and a cover plate, wherein the shell, the bottom plate and the cover plate are provided with a three-level pressure relief design with a plurality of explosion-proof nicks, when the internal air pressure of the large-capacity battery is too high, the internal air can be released successively through a release valve, an explosion-proof membrane and the explosion-proof nicks, so that the instantaneous explosion of the battery is avoided; this patent can prevent effectively that the inside pressure of large capacity battery from amassing, in time releases the inside gas of battery stage by stage, avoids the battery to take place instantaneous explosion. The internal pressure of the battery can be released to a certain extent, and the safety of the battery is ensured, but the patent does not give the problem of how to connect a plurality of high-capacity single batteries; in the prior art, when a plurality of high-capacity single batteries are connected in series, most of the single batteries are connected through wires, and firstly, the problems of wire winding and more wire ends exist; secondly, the current of the large-capacity battery is large, and the problem of over-burning of the electric wire is easy to exist.
Disclosure of Invention
Aiming at the problems of winding of electric wires, more wire ends and over-burning of the electric wires when a plurality of conventional high-capacity single batteries are connected in series, the invention provides a high-capacity battery with a pole connected with a shell and a high-capacity battery series connection structure.
According to the invention, the pole is fixedly connected to the side wall of the shell, one side part of the pole extends to the outside of the shell, when a plurality of high-capacity batteries are connected in series, the poles of two adjacent high-capacity batteries can be directly connected, and the problems of wire winding and more wire ends in wire connection are avoided; meanwhile, the pole can bear larger overflowing amount, so that the problem of overburning is avoided; the specific technical scheme is as follows:
the high-capacity battery with the polar columns connected with the casing comprises the casing and the polar column body, wherein one side part of the polar column body penetrates through the casing side wall of the casing and extends to the outer side of the casing side wall.
Further inject, be provided with utmost point post heat-conducting portion and utmost point post weld portion on the utmost point post body, utmost point post weld portion is arranged in the inner chamber of casing, utmost point post heat-conducting portion runs through the casing lateral wall and extends to the outside of casing lateral wall.
Further inject, the junction of utmost point post heat-conducting portion and utmost point post welding part is provided with the rectangle ring limit, the rectangle ring limit encircles utmost point post body a week.
Further, the pole heat-conducting part is fixedly connected with the side wall of the shell through the upper panel.
Further limiting, a lower gasket is arranged between the side wall of the shell and the pole welding part; an upper gasket is arranged between the pole heat-conducting part and the upper panel.
Further limiting, a pole column through hole is formed in the side wall of the shell, and a first concave platform and a second concave platform are sequentially arranged in the pole column through hole from outside to inside; the lower gasket is provided with a second sealing surface, a first sealing surface and an insulating surface of the lower gasket; the upper gasket is provided with a sealing surface and an upper gasket insulating surface; the pole welding part is attached to the insulating surface of the lower gasket, the lower end face of the rectangular ring edge is attached to the first sealing surface of the lower gasket, and the side face of the rectangular ring edge is attached to the second sealing surface of the lower gasket; the pole heat-conducting part is attached to the insulating surface of the upper gasket, and the upper end surface of the first concave platform is connected with the upper panel through the sealing surface of the upper gasket.
Further, the thickness of the rectangular ring edge is the same as that of the second concave platform.
Further, the upper panel, the upper gasket and the first recessed platform are provided with rivet holes, and the upper panel, the upper gasket and the first recessed platform are fixedly connected through rivets penetrating through the rivet holes.
Further, the upper gasket and the lower gasket are both insulating plastic parts or insulating rubber parts.
Further inject, the top opening part of casing is provided with the upper cover plate, the casing encloses into battery with the upper cover plate jointly and holds the chamber, be provided with on the upper cover plate and annotate the liquid mouth and let out the mouth of exploding.
Further inject, the battery holds the intracavity and is provided with a plurality of electric cores, and a plurality of electric cores pass through utmost point post weld part parallelly connected.
Further inject, the electricity core includes the electricity core body, utmost point ear on the electricity core body passes through the conflux sheet and is connected with utmost point post weld part.
Further inject, the piece that converges includes anodal piece and negative pole piece that converges, just anodal piece and the negative pole piece that converges all have a plurality ofly, and a plurality of anodal pieces that converge set up side by side on electric core body, and a plurality of negative poles piece that converge set up side by side on electric core body, utmost point post body includes anodal post and negative pole post, electric core body passes through the utmost point post welded portion connection of a plurality of anodal pieces that converge and anodal post, electric core body passes through the utmost point post welded portion connection of a plurality of negative poles piece and negative pole post.
Further, 2 positive bus bars and 2 negative bus bars are provided.
Further, the positive bus bar and the negative bus bar are both of a structure with an L-shaped cross section.
Further, a supporting part is arranged between the battery cell and the bottom wall of the shell.
Further inject, utmost point post heat-conducting portion is provided with the heat pipe inserting groove along the direction of height, it has the heat pipe to peg graft in the heat pipe inserting groove, the condensation end of heat pipe extends to the outside of heat pipe inserting groove.
Further, the condensation end of the heat pipe is provided with a refrigeration mechanism.
Further limiting, the condensation end of the heat pipe is connected with the refrigerating mechanism through a vapor chamber.
Further limiting, a heat pipe through hole is formed in the soaking plate, the heat pipe penetrates through the heat pipe through hole to be connected with the refrigerating mechanism, and heat conducting silicone grease is coated on the part, inserted into the heat pipe inserting groove, of the heat pipe.
Further defined, the cross section of the heat pipe perforation is rectangular.
Further limiting, fastener clamping grooves are formed in the two opposite end parts of the pole heat conducting part; one side of keeping away from utmost point post weld part on the utmost point post heat conduction portion is provided with arc fastening groove, the arc surface radian in arc fastening groove is not more than 180.
The high-capacity battery series connection structure comprises a plurality of high-capacity batteries connected with the shell, and two adjacent poles are connected with the high-capacity batteries connected with the shell in series through the fastening connection mechanism.
Further limiting, the fastening and connecting mechanism comprises a fixing part, a pushing part and a threaded fastener, clamping tongues are arranged at the tail end of the fixing part and the tail end of the pushing part, the clamping tongues of the fixing part and the clamping tongues of the pushing part are arranged oppositely, and the clamping tongues on the fixing part and the clamping tongues on the pushing part are respectively arranged in fastener clamping grooves on a large-capacity battery with two adjacent poles connected with the shell; the fixed part and the pushing part are connected through a threaded fastener.
Further inject, threaded fastener includes threaded rod and nut, a tip and fixed part fixed connection of threaded rod, it is spacing that the other end runs through pushing moving part and passes through the nut, threaded rod and pushing moving part threaded connection.
Further limited, a sliding groove is arranged on the fixing part, and one end part of the pushing part, which is opposite to the clamping tongue, is arranged in the sliding groove.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a high-capacity battery with a pole connected with a shell, which comprises the shell and a pole body, wherein one side part of the pole body penetrates through the side wall of the shell and extends to the outer side of the side wall of the shell. When a plurality of poles are connected in series with a high-capacity battery connected with the shell, the poles can be connected through the pole bodies extending to the outer side of the side wall of the shell, and the connection of electric wires is not needed, so that the problems of winding of the electric wires and multiple wire ends are avoided; meanwhile, the pole has larger overcurrent, the circulation of current on two adjacent high-capacity batteries can be completely met, and the problem of overburning can not occur. With utmost point post body and with the casing fusion design, utmost point post body and electrolyte direct contact can be the casing outside with the heat rapid conduction of electricity core, can effectively prevent electric core thermal-arrest.
2. The pole body is provided with the pole heat-conducting part and the pole welding part, the pole welding part is arranged in the inner cavity of the shell, series-parallel connection among a plurality of electric cores is facilitated through the pole welding part, series connection among a plurality of large-capacity batteries is facilitated through the pole heat-conducting part, and meanwhile, the pole heat-conducting part can conduct and dissipate heat generated inside the batteries, so that heat accumulation inside the batteries is prevented, and the safety of the large-capacity single batteries during working is ensured; the heat dissipation performance of the pole body is improved, and meanwhile the refrigeration mechanism also plays a role in balancing the temperature of the pole body.
3. The rectangular ring edge is arranged at the joint of the pole heat-conducting part and the pole welding part, and the rectangular ring edge facilitates the sealing and insulating connection between the pole body and the side wall of the shell.
4. The post heat-conducting part is fixedly connected with the side wall of the shell through the upper panel, and the post body and the side wall of the shell can be clamped through the upper panel.
5. A lower gasket is arranged between the side wall of the shell and the pole welding part, and an upper gasket is arranged between the pole heat-conducting part and the upper panel; the side wall of the shell and the pole welding part can be insulated and sealed through the lower gasket; the pole heat-conducting part and the upper panel can be insulated and sealed through the upper gasket.
6. Be provided with utmost point post perforation on the casing lateral wall, punch the interior first concave station and the second concave station of having set gradually from outer to interior in utmost point post, can be with lower packing ring, last paneling and the tighter of joint between utmost point post body and the casing lateral wall through first concave station and second concave station, improved sealed and insulating effect.
7. The upper panel, the upper gasket and the first recessed platform are fixedly connected by a rivet penetrating through the rivet hole. The upper panel, the upper gasket and the first recessed platform are fastened by rivets.
8. The current collector comprises a plurality of positive current collectors and a plurality of negative current collectors, the positive current collectors and the negative current collectors are all multiple, the positive current collectors are arranged on the cell body side by side, the negative current collectors are arranged on the cell body side by side, the terminal post body comprises a positive terminal post and a negative terminal post, the cell body is connected with the terminal post welding portion of the positive terminal post through the positive current collectors, and the cell body is connected with the terminal post welding portion of the negative terminal post through the negative current collectors. The whole welding balance of the battery core and the pole body is improved through the plurality of positive pole bus pieces and the plurality of negative pole bus pieces, a redundancy protection mechanism is provided, and in case of insufficient welding or infirm welding of a pole lug on one side of a certain battery core, the whole using effect of the battery cannot be influenced.
9. The positive pole current collecting piece and the negative pole current collecting piece are both of structures with L-shaped cross sections, and the L-shaped structures can facilitate welding between the current collecting pieces and the pole body.
10. Be provided with the supporting part between the diapire of electric core and casing, can prevent through the supporting part that electric core is unsettled, improved the stability of electric core installation.
11. The heat pipe inserting groove is formed in the pole heat conducting portion in the height direction, the heat pipe is inserted in the heat pipe inserting groove, and the condensation end of the heat pipe extends to the outer side of the heat pipe inserting groove. The heat accumulated inside the battery on the pole body can be timely conducted out through the heat pipe.
12. The condensing end of the heat pipe is provided with a refrigerating mechanism, and the heat emission efficiency can be improved through the refrigerating mechanism. The part of the heat pipe inserted in the heat pipe insertion groove is coated with heat-conducting silicone grease; the heat conduction between the pole body and the heat pipe can be accelerated through the heat-conducting silicone grease.
13. The condensation end of the heat pipe is connected with the refrigerating mechanism through the vapor chamber, and the temperature conducted to the condensation end of the heat pipe can be uniformly distributed at the lower end of the refrigerating mechanism through the vapor chamber, so that the heat dissipation efficiency of the refrigerating mechanism is improved.
14. The two opposite end parts of the pole heat conducting part are provided with fastener clamping grooves, and the two adjacent high-capacity batteries can be conveniently connected in series through the fastener clamping grooves. An arc-shaped fastening groove is formed in one side, away from the pole welding part, of the pole heat-conducting part; the arc surface radian of the arc fastening groove is not more than 180 degrees, and the firmness of connection between two adjacent high-capacity batteries can be improved through the arc fastening groove.
15. The fastening and connecting mechanism comprises a fixing part, a pushing part and a threaded fastener, when the fastening and connecting mechanism is used, the pushing part is pushed to be close to the fixing part through the threaded fastener, the distance between the clamping tongue at the tail end of the fixing part and the clamping tongue at the tail end of the pushing part is shortened, and then two adjacent large-capacity batteries are clamped.
16. The fixed part is provided with a sliding groove, and one end part of the pushing part opposite to the clamping tongue is arranged in the sliding groove. The sliding groove can improve the stability of the propelling part moving to the fixing part.
Drawings
FIG. 1 is a schematic view of a high capacity battery having a terminal connected to a case according to the present invention;
FIG. 2 is a longitudinal sectional view of a high capacity battery of the present invention with the terminal post connected to the housing;
FIG. 3 is a schematic view of the connection between the side wall of the case and the positive or negative pole;
FIG. 4 is an exploded view of the connection of the side wall of the case with the positive or negative post;
FIG. 5 is a first schematic diagram of the structure of the positive or negative electrode pillar;
FIG. 6 is a schematic structural view of a side wall of the housing;
FIG. 7 is a schematic view of the construction of the lower gasket;
FIG. 8 is a schematic structural view of an upper gasket;
FIG. 9 is a schematic structural view of an upper panel;
fig. 10 is a schematic structural diagram of a cell;
FIG. 11 is a schematic structural view of a vapor chamber;
fig. 12 is a schematic structural view of a series structure of large capacity batteries according to the present invention;
FIG. 13 is a first schematic structural view of the fastening mechanism;
FIG. 14 is a second schematic structural view of the fastening mechanism;
FIG. 15 is a second schematic structural view of the positive or negative post of FIG. 5;
wherein, 1-shell, 2-upper cover plate, 3-positive pole, 4-negative pole, 5-shell side wall, 51-first concave platform, 52-second concave platform, 6-heat pipe, 7-refrigeration mechanism, 8-liquid injection port, 9-explosion vent, 10-upper panel, 101-upper panel sealing surface, 102-welding surface, 11-upper gasket, 111-sealing surface, 112-upper gasket insulating surface, 12-lower gasket, 121-second sealing surface, 122-first sealing surface, 123-lower gasket insulating surface, 13-rivet, 14-battery cell, 140-battery cell body, 141-positive pole confluence piece, 142-negative pole confluence piece, 15-pole heat conduction part, 16-rectangular ring edge, 17-pole welding part, 18-heat pipe inserting groove, 19-fastener clamping groove, 20-arc fastening groove, 21-vapor chamber, 211-heat pipe perforation, 22-fastening connection mechanism, 221-fixing part, 222-pushing part, 223-threaded rod, 224-nut, 225-clamping tongue.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The invention discloses a high-capacity battery with a pole connected with a shell, which comprises a shell 1 and a pole body, wherein one side part of the pole body penetrates through the shell side wall 5 of the shell 1 and extends to the outer side of the shell side wall 5. Be provided with utmost point post heat-conducting portion 15 and utmost point post weld 17 on the utmost point post body, utmost point post weld 17 is arranged in the inner chamber of casing 1, and utmost point post heat-conducting portion 15 runs through casing lateral wall 5 and extends to the outside of casing lateral wall 5. The junction of the post heat-conducting part 15 and the post welding part 17 is provided with a rectangular annular edge 16, and the rectangular annular edge 16 surrounds the post body for a circle. The pole heat conducting part 15 is fixedly connected with the shell side wall 5 through the upper panel 10. A lower gasket 12 is arranged between the shell side wall 5 and the pole welding part 17; an upper gasket 11 is arranged between the pole heat-conducting part 15 and the upper panel 10. A pole column through hole is formed in the side wall 5 of the shell, and a first concave platform 51 and a second concave platform 52 are sequentially arranged in the pole column through hole from outside to inside; the lower gasket 12 is provided with a second sealing surface 121, a first sealing surface 122 and a lower gasket insulating surface 123; the upper gasket 11 is provided with a sealing surface 111 and an upper gasket insulating surface 112; the pole welding part 17 is attached to the lower gasket insulating surface 123 of the lower gasket 12, the lower end surface of the rectangular ring edge 16 is attached to the first sealing surface 122 of the lower gasket 12, and the side surface of the rectangular ring edge 16 is attached to the second sealing surface 121 of the lower gasket 12; the post heat-conducting portion 15 is attached to an upper gasket insulating surface 112 of the upper gasket 11, and an upper end surface of the first depressed center 51 is connected to the upper panel 10 through a sealing surface 111 of the upper gasket 11. The thickness of the rectangular rim 16 is the same as the thickness of the second recessed land 52. Rivet holes are provided in the upper panel 10, the upper gasket 11, and the first recess 51, and the upper panel 10, the upper gasket 11, and the first recess 51 are fixedly connected by rivets 13 penetrating the rivet holes. The upper gasket 11 and the lower gasket 12 are both an insulating plastic member or an insulating rubber member. The top opening part of the shell 1 is provided with an upper cover plate 2, the shell 1 and the upper cover plate 2 jointly enclose a battery accommodating cavity, and a liquid injection port 8 and an explosion venting port 9 are arranged on the upper cover plate 2. The battery accommodating cavity is internally provided with a plurality of battery cores 14, and the battery cores 14 are connected in parallel through a pole welding part 17. The battery cell 14 includes a battery cell body 140, and a tab on the battery cell body 140 is connected to the tab welding portion 17 through a bus bar. The bus sheet includes positive bus sheet 141 and negative bus sheet 142, and positive bus sheet 141 and negative bus sheet 142 all have a plurality ofly, a plurality of positive bus sheets 141 set up on cell body 140 side by side, a plurality of negative bus sheets 142 set up on cell body 140 side by side, utmost point post body includes anodal post 3 and negative pole post 4, cell body 140 is connected with anodal post 3's utmost point post welding part 17 through a plurality of positive bus sheets 141, cell body 140 is connected with negative pole post 4's utmost point post welding part 17 through a plurality of negative bus sheets 142. Each of the positive bus bar 141 and the negative bus bar 142 has 2 pieces. The positive bus bar 141 and the negative bus bar 142 are each of a structure having an "L" shaped cross section. A supporting part is arranged between the battery cell 14 and the bottom wall of the casing 1. The pole heat conducting part 15 is provided with a heat pipe inserting groove 18 along the height direction, a heat pipe 6 is inserted in the heat pipe inserting groove 18, and the condensation end of the heat pipe 6 extends to the outer side of the heat pipe inserting groove 18. The condensation end of the heat pipe 6 is provided with a refrigeration mechanism 7. The condensation end of the heat pipe 6 is connected with the refrigerating mechanism 7 through a soaking plate 21, and the part of the heat pipe 6 inserted in the heat pipe insertion groove 18 is coated with heat-conducting silicone grease. The vapor chamber 21 is provided with a heat pipe through hole 211, and the heat pipe 6 penetrates through the heat pipe through hole 211 and is connected with the refrigeration mechanism 7. The cross section of the heat pipe penetration hole 211 is rectangular. Fastener clamping grooves 19 are formed in the two opposite end parts of the pole heat-conducting part 15; one side of keeping away from utmost point post welding portion 17 on utmost point post heat-conducting portion 15 is provided with arc fastening groove 20, and the arc surface radian of arc fastening groove 20 is not more than 180.
The invention relates to a high-capacity battery series structure, which comprises a plurality of high-capacity batteries formed by connecting the poles of claim 21 with a shell, wherein the high-capacity batteries formed by connecting two adjacent poles with the shell are connected in series through a fastening connection mechanism 22. The fastening connection mechanism 22 comprises a fixing part 221, a pushing part 222 and a threaded fastener, the tail end of the fixing part 221 and the tail end of the pushing part 222 are both provided with a clamping tongue 225, the clamping tongue 225 of the fixing part 221 and the clamping tongue 225 of the pushing part 222 are arranged oppositely, and the clamping tongue 225 on the fixing part 221 and the clamping tongue 225 on the pushing part 222 are respectively arranged in the fastener clamping grooves 19 on the large-capacity battery with two adjacent poles connected with the shell; the fixing portion 221 and the pushing portion 222 are connected to each other by a screw fastener. The threaded fastener comprises a threaded rod 223 and a nut 224, one end of the threaded rod 223 is fixedly connected with the fixing part 221, the other end of the threaded rod 223 penetrates through the pushing part 222 to be limited through the nut 224, and the threaded rod 223 is in threaded connection with the pushing part 222. The fixing portion 221 is provided with a sliding slot, and an end of the pushing portion 222 opposite to the engaging tongue 225 is disposed in the sliding slot.
Example 1
Referring to fig. 1-2, the large-capacity battery with the terminal connected to the casing of the present embodiment includes a casing 1 and a terminal body, the terminal body includes a positive terminal 3 and a negative terminal 4, the casing 1 is a prismatic structure or a cylindrical structure formed by a casing side wall 5 and a casing bottom wall, preferably, the casing 1 of the present embodiment is a quadrangular structure, the top of the casing 1 is an opening, an upper cover plate 2 is arranged at the opening of the top of the casing 1, and a battery accommodating cavity is defined by the casing side wall 5, the casing bottom wall and the upper cover plate 2; the positive electrode tab 3 and the negative electrode tab 4 are respectively provided on two opposing case side walls 5 on the case 1 and extend to the outside of the case side walls 5.
Referring to fig. 5, the positive electrode post 3 and the negative electrode post 4 of the present embodiment each include an electrode post heat-conducting portion 15 and an electrode post welding portion 17, wherein the electrode post heat-conducting portion 15 and the electrode post welding portion 17 are integrally disposed, the electrode post welding portion 17 is disposed inside the battery accommodating chamber, and the electrode post heat-conducting portion 15 penetrates through the casing side wall 5 and extends to the outside of the casing side wall 5.
Referring to fig. 3 and 4, a rectangular annular edge 16 is provided at the junction of the pole heat-conducting portion 15 and the pole welding portion 17, the rectangular annular edge 16 has a rectangular cross section, and the rectangular annular edge 16 surrounds and encircles two opposite side surfaces, the upper end surface and the lower end surface of the positive pole 3 and the negative pole 4 to form an annular structure. An upper panel 10 is arranged on the pole heat-conducting part 15, and the pole heat-conducting part 15 is fixedly connected with the shell side wall 5 through the upper panel 10. A lower gasket 12 is arranged in front of the shell side wall 5 and the pole welding part 17, and the shell side wall 5 and the pole welding part 17 are insulated and sealed through the lower gasket 12; an upper gasket 11 is provided between the post heat-conducting portion 15 and the upper panel 10, and the post heat-conducting portion 15 and the upper panel 10 are insulated and sealed by the upper gasket 11. The connection structure among the upper panel 10, the pole body, the upper gasket 11, the lower gasket 12 and the shell side wall 5 is as follows: referring to fig. 6, a pole perforation is arranged on the side wall 5 of the casing, and a first concave platform 51 and a second concave platform 52 are sequentially arranged in the pole perforation from outside to inside; referring to fig. 7, a second sealing surface 121, a second sealing surface 122, and a lower gasket insulating surface 123 are provided on the lower gasket 12; referring to fig. 8, a sealing surface 111 and an upper gasket insulation surface 112 are provided on the upper gasket 11, and referring to fig. 9, an upper panel sealing surface 101 and a welding surface 102 are provided on the upper panel 10; the side surface of the pole welding part 17 is attached to the insulating surface 123 of the lower gasket, the pole welding part 17 is hermetically insulated from the side surface of the second concave stage 52 and the bottom hole wall of the pole perforation by the insulating surface 123 of the lower gasket, the lower end surface of the rectangular ring edge 16 is attached to the first sealing surface 122 of the lower gasket 12, the lower end surface of the rectangular ring edge 16 is hermetically insulated from the upper end surface of the second concave stage 52 by the first sealing surface 122, the side surface of the rectangular ring edge 16 is attached to the second sealing surface 121 of the lower gasket 12, the side surface of the rectangular ring edge 16 is hermetically insulated from the side surface of the first concave stage 51 by the second sealing surface 121, the side surface of the pole heat conducting part 15 is attached to the insulating surface 112 of the upper gasket 11, the side surface of the pole heat conducting part 15 is hermetically insulated from the top of the pole perforation by the insulating surface 112 of the upper gasket, the upper end surface of the first concave stage 51 is attached to the sealing surface 111 of the upper gasket 11, the upper panel 10 is provided outside the sealing surface 111 of the upper gasket 11, and the upper end surface of the first recessed land 51 is sealed and insulated from the upper panel 10 by the sealing surface 111 of the upper gasket 11.
Preferably, the first concave land 51 and the second concave land 52 of the present embodiment are both annular convex lands disposed along the circumferential direction of the pole penetration hole.
Preferably, the thickness of the rectangular annular rim 16 of the present embodiment is the same as the thickness of the second recessed platform 52, so that the rectangular annular rim 16 is just clamped in the second recessed platform 52, and the rectangular annular rim 16 is tightly clamped with the side wall 5 of the housing.
Preferably, in the upper panel 10, a circle of rivet holes are formed at the edge of the upper gasket 11 and the edge of the upper end surface of the first recess 51, and the upper panel 10, the upper gasket 11 and the first recess 51 are fixedly connected by the rivet 13 penetrating through the rivet holes.
Preferably, the upper gasket 11 and the lower gasket 12 of the present embodiment are both insulating plastic members or both insulating rubber members.
Preferably, the upper cover plate 2 of the present embodiment is provided with a liquid injection port 8 and an explosion venting port 9.
In the present embodiment, 16 battery cells 14 are disposed in the battery accommodating cavity, and the 16 battery cells 14 are connected in parallel by the pole welding portion 17.
It should be noted that the number of the battery cells 14 in this embodiment may be 5, 8, 10, 15, or even more.
Referring to fig. 10, the battery cell 14 of the present embodiment includes a cell body 140, and tabs are disposed on two opposite sides of the cell body 140, where one side is a positive tab and the other side is a negative tab, two positive bus bars 141 are connected in parallel to the positive tab, two negative bus bars 142 are connected in parallel to the negative tab, the two positive bus bars 141 are connected to the positive post 3, and the two negative bus bars 142 are connected to the negative post 4. Preferably, the two positive bus bars 141 are welded to the positive post 3 and the positive tab, and the two negative bus bars 142 are welded to the negative post 4 and the negative tab.
It should be noted that the number of the positive bus bars 141 and the negative bus bars 142 of the present embodiment may also be 3, 4, 5, or even more.
Preferably, the positive bus bar 141 and the negative bus bar 142 of the present embodiment are both in an "L" shaped cross section, and the positive bus bar 141 and the negative bus bar 142 are easily welded to the positive post 3 and the negative post 4.
Preferably, a supporting portion is arranged between the battery cell 14 and the bottom wall of the casing, the supporting portion is a rectangular boss intermittently protruding from the bottom surface, and the upper surface of the rectangular boss is flush with the lower surface of the pole body. The battery cell 14 can be prevented from being in a suspended state through the supporting part, and the connection stability of the battery cell 14 is improved.
According to the embodiment, the heat pipe insertion groove 18 is formed in the pole heat conducting portion 15 in the height direction, the heat pipe 6 is inserted in the heat pipe insertion groove 18, the evaporation end of the heat pipe 6 is inserted in the heat pipe insertion groove 18, the condensation end of the heat pipe 6 extends to the outer side of the heat pipe insertion groove 18, the refrigeration mechanism 7 is arranged at the top of the condensation end of the heat pipe 6, the soaking plate 21 is arranged at the bottom of the refrigeration mechanism 7, see fig. 11, 3 heat pipe through holes 111 are formed in the soaking plate 21, and the condensation end of the heat pipe 6 penetrates through the heat pipe through holes 111 and is fixedly connected with the bottom of the refrigeration mechanism 7.
Preferably, the outer surface of the evaporation end of the heat pipe 6 of the present embodiment is coated with heat conductive silicone grease.
Preferably, the heat pipe inserting groove 18 of the present embodiment is a structure with a rectangular cross section; wherein, two surfaces along the width direction of the rectangle are both arc surfaces, and the arc surfaces are convenient for inserting the evaporation end of the heat pipe 6 into the heat pipe inserting groove 18.
It should be noted that the number of the heat pipe penetrating through holes 111 of the present embodiment may be 2, 4, 5, or even more, and the plurality of heat pipe penetrating through holes 111 may enable the large-capacity batteries, in which the post heat conducting portions 15 of two adjacent post bodies are connected to the casing 1, to share one soaking plate 21 and the refrigeration mechanism 7.
Preferably, the refrigeration mechanism 7 of this embodiment is a semiconductor refrigeration plate or a heat dissipation fan.
Preferably, the material of the positive and negative poles 3 of this embodiment is aluminum or aluminum alloy, and a copper composite layer is provided on the side surface of the pole welding portion 17 of the negative pole 4, and the thickness of the copper composite layer is not as large as 0.2 mm.
Preferably, the positive electrode bus bar 141 of the present embodiment is made of aluminum, and the negative electrode bus bar 142 is made of a copper-nickel composite sheet.
Preferably, the opposite ends of the pole heat-conducting portion 15 of the present embodiment are provided with fastener catching grooves 19; an arc-shaped fastening groove 20 is formed in one side, away from the pole welding portion 17, of the pole heat conducting portion 15, the arc-shaped fastening grooves 20 are a plurality of arc-shaped surface grooves which are arranged in parallel, the number of the arc-shaped fastening grooves 20 can be 5, 10, 15 or even more, and the radian of the arc-shaped surface of each arc-shaped fastening groove 20 is not larger than 180 degrees; preferably, the arc surface of the arc fastening groove 20 of the present embodiment has an arc degree of 120 to 150.
Example 2
Referring to fig. 12, the large-capacity battery series structure of the present embodiment is formed by connecting the poles of the embodiments in series with the large-capacity batteries connected to the housing, preferably, the number of the large-capacity batteries connected to the poles of the present embodiment is 3, and the large-capacity batteries connected to the housing by two adjacent poles are connected in series by the fastening connection mechanism 22.
Referring to fig. 13 and 14, the fastening and connecting mechanism 22 of the present embodiment includes a fixing portion 221, a pushing portion 222 and a threaded fastener, the fixing portion 221 includes a vertical connecting rod and a horizontal connecting rod fixedly connected to the vertical connecting rod, a fastening tongue 225 is disposed at the bottom of the fixing portion 221, the pushing portion 222 is a vertical connecting rod disposed in parallel with the vertical connecting rod of the fixing portion 221, a sliding slot is disposed at the lower end of the horizontal connecting rod of the fixing portion 221, the top of the pushing portion 222 is disposed in the sliding slot and can move along the sliding slot, a fastening tongue 225 is disposed at the bottom of the pushing portion 222, wherein the fastening tongue 225 on the fixing portion 221 and the fastening tongue 225 on the pushing portion 222 are disposed opposite to each other, preferably, the fastening tongue 225 on the fixing portion 221 of the present embodiment faces the fastening tongue 225 on the pushing portion 222, the fastening tongue 225 on the fixing portion 221 and the pushing portion 222 and the fastening groove 19 of the fastener on the large capacity battery with two adjacent poles connected to the housing are respectively fastened, the fixing portion 221 and the pushing portion 222 are connected to each other by a screw fastener.
Preferably, the screw fastener of the present embodiment includes a threaded rod 223 and a nut 224, one end of the threaded rod 223 is fixedly connected to the fixing portion 221, the other end penetrates the pushing portion 222 to be limited by the nut 224, and the threaded rod 223 is screwed to the pushing portion 222.
Referring to FIG. 15, the catch tongue 225 is shaped as a "straight" or "L" shaped structure that conforms to the shape of the fastener retaining slot 19.
The invention relates to a high-capacity battery series structure, which comprises the following use processes: the clamping tongue 225 on the fixing part 221 and the clamping tongue 225 on the pushing part 222 are respectively clamped in the fastener clamping groove 19 on the large-capacity battery with two adjacent poles connected with the shell, the pushing part 222 is pushed to approach the fixing part 221 by screwing the threaded fastener, the distance between the pushing part 222 and the fixing part 221 is shortened, then the pole heat-conducting parts 15 on the large-capacity battery with two adjacent poles connected with the shell are approached, and closely contact them, so that a plurality of poles are connected in series with the large-capacity battery connected with the casing, when the large-capacity battery with the pole connected with the shell normally works, the generated heat is conducted to the evaporation end of the heat pipe 6 through the pole heat conducting part 15, and is conducted to the condensation end through the heat pipe 6, the heat of the condensation end is uniformly distributed through the soaking plate 21 and is dissipated through the refrigerating mechanism 7, and the temperature gathered inside the battery is prevented from being overhigh.
The invention has been described in further detail with reference to specific preferred embodiments thereof, and it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (26)

1. Utmost point post and high capacity battery that casing is connected, its characterized in that, including casing and utmost point post body, a lateral part of utmost point post body runs through the casing lateral wall of casing and extends to the outside of casing lateral wall.
2. A large-capacity battery with a post connected with a casing according to claim 1, wherein the post body is provided with a post heat-conducting portion and a post welding portion, the post welding portion is disposed in the inner cavity of the casing, and the post heat-conducting portion penetrates through the side wall of the casing and extends to the outside of the side wall of the casing.
3. The high-capacity battery with the terminal connected with the casing according to claim 2, wherein a rectangular ring edge is arranged at the joint of the terminal heat-conducting portion and the terminal welding portion, and the rectangular ring edge surrounds the terminal body for a circle.
4. A large-capacity battery having a terminal post connected to a case as claimed in claim 3, wherein said terminal post heat-conducting portion is fixedly connected to the side wall of the case through an upper panel.
5. The high-capacity battery with a post connected with a case according to claim 4, wherein a lower gasket is provided between the case side wall and the post welding part; an upper gasket is arranged between the pole heat-conducting part and the upper panel.
6. The high-capacity battery with the pole connected with the shell according to claim 5, wherein the side wall of the shell is provided with a pole through hole, and a first concave station and a second concave station are sequentially arranged in the pole through hole from outside to inside; the lower gasket is provided with a second sealing surface, a first sealing surface and an insulating surface of the lower gasket; the upper gasket is provided with a sealing surface and an upper gasket insulating surface; the pole welding part is attached to the insulating surface of the lower gasket, the lower end face of the rectangular ring edge is attached to the first sealing surface of the lower gasket, and the side face of the rectangular ring edge is attached to the second sealing surface of the lower gasket; the pole heat-conducting part is attached to the insulating surface of the upper gasket, and the upper end surface of the first concave platform is connected with the upper panel through the sealing surface of the upper gasket.
7. A large capacity battery with its terminal connected to the casing as claimed in claim 6, wherein the rectangular ring has the same thickness as the second depressed area.
8. A large capacity battery having a post connected to a case as set forth in claim 7, wherein rivet holes are provided on the upper panel, the upper gasket, and the first depressed stage, and the upper panel, the upper gasket, and the first depressed stage are fixedly connected by rivets penetrating the rivet holes.
9. The high-capacity battery with the terminal connected with the casing as claimed in claim 8, wherein the upper gasket and the lower gasket are both insulating plastic or insulating rubber.
10. The high-capacity battery with the pole connected with the casing as claimed in claim 9, wherein an upper cover plate is arranged at the opening at the top of the casing, the casing and the upper cover plate jointly enclose a battery accommodating cavity, and a liquid injection port and an explosion venting port are arranged on the upper cover plate.
11. A high capacity battery having a terminal connected to a casing as claimed in claim 10, wherein the battery accommodating chamber is provided with a plurality of cells, and the plurality of cells are connected in parallel by the terminal welding portion.
12. The high capacity battery with a terminal connected to the casing of claim 11, wherein the battery cell comprises a cell body, and the tab of the cell body is connected to the terminal welding part through a bus bar.
13. The high capacity battery with a post connected to the casing according to claim 12, wherein the bus bar includes a plurality of positive bus bars and a plurality of negative bus bars, the positive bus bars and the negative bus bars are disposed side by side on the cell body, the post body includes a positive post and a negative post, the cell body is connected to the post welding portion of the positive post through the positive bus bars, and the cell body is connected to the post welding portion of the negative post through the negative bus bars.
14. A large capacity battery having a terminal connected to a case according to claim 13, wherein the number of the positive electrode bus bar and the negative electrode bus bar is 2.
15. A large-capacity battery having a terminal connected to a case according to claim 14, wherein the positive electrode bus bar and the negative electrode bus bar are each of a structure having an "L" shaped cross section.
16. A large capacity battery having a terminal post connected to a casing as claimed in claim 15, wherein a support portion is provided between the cell and the bottom wall of the casing.
17. A large capacity battery with a post connected with a casing as claimed in any one of claims 12 to 16, wherein the heat conducting portion of the post is provided with a heat pipe insertion groove along a height direction, a heat pipe is inserted into the heat pipe insertion groove, and a condensation end of the heat pipe extends to an outer side of the heat pipe insertion groove.
18. The high-capacity battery with the pole connected with the shell as claimed in claim 17, wherein a refrigeration mechanism is arranged at the condensation end of the heat pipe, and the part of the heat pipe inserted in the heat pipe insertion groove is coated with heat-conducting silicone grease.
19. A high capacity battery with its terminal connected to the case as claimed in claim 18, wherein the condensation end of the heat pipe is connected to the cooling mechanism through a soaking plate.
20. A large capacity battery with its terminal connected to the casing as claimed in claim 19, wherein the soaking plate is provided with a heat pipe through hole, and the heat pipe penetrates through the heat pipe through hole and is connected to the refrigerating mechanism.
21. A high capacity battery with a post connected to a case as claimed in claim 20, wherein the cross section of the heat pipe penetration hole is rectangular.
22. A large-capacity battery in which a post is connected to a case as claimed in claim 21, wherein fastener catching grooves are provided at opposite ends of the heat-conducting portion of the post; one side of keeping away from utmost point post weld part on the utmost point post heat conduction portion is provided with arc fastening groove, the arc surface radian in arc fastening groove is not more than 180.
23. A large-capacity battery series structure is characterized by comprising a plurality of large-capacity batteries connected by the poles of claim 22 and a shell, wherein the large-capacity batteries connected by two adjacent poles and the shell are connected in series through a fastening connection mechanism.
24. A large capacity battery series connection structure as claimed in claim 23, wherein the fastening connection mechanism comprises a fixing portion, a pushing portion and a threaded fastener, the end of the fixing portion and the end of the pushing portion are both provided with a fastening tongue, and the fastening tongue of the fixing portion and the fastening tongue of the pushing portion are arranged opposite to each other, and the fastening tongue on the fixing portion and the fastening tongue on the pushing portion are respectively arranged in the fastening groove of the fastener on the large capacity battery with two adjacent poles connected with the housing; the fixed part and the pushing part are connected through a threaded fastener.
25. The series connection structure of large capacity batteries according to claim 24, wherein the screw fastener comprises a screw rod and a nut, one end of the screw rod is fixedly connected with the fixing part, the other end of the screw rod penetrates through the pushing part and is limited by the nut, and the screw rod is in threaded connection with the pushing part.
26. A large capacity battery cell series structure as claimed in claim 25, wherein said fixing portion is provided with a slide groove, and an end portion of said moving portion opposite to said engaging tongue is disposed in said slide groove.
CN202111301149.XA 2021-11-04 2021-11-04 Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure Pending CN113922005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111301149.XA CN113922005A (en) 2021-11-04 2021-11-04 Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111301149.XA CN113922005A (en) 2021-11-04 2021-11-04 Large-capacity battery with pole column connected with shell and large-capacity battery series connection structure

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Publication Number Publication Date
CN113922005A true CN113922005A (en) 2022-01-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141810A1 (en) * 2022-11-09 2024-05-10 Hutchinson Electric drum set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141810A1 (en) * 2022-11-09 2024-05-10 Hutchinson Electric drum set

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