CN115064839B - Rechargeable battery of electric vehicle - Google Patents
Rechargeable battery of electric vehicle Download PDFInfo
- Publication number
- CN115064839B CN115064839B CN202210722563.6A CN202210722563A CN115064839B CN 115064839 B CN115064839 B CN 115064839B CN 202210722563 A CN202210722563 A CN 202210722563A CN 115064839 B CN115064839 B CN 115064839B
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- Prior art keywords
- battery pack
- mounting plate
- sleeve
- negative electrode
- positive electrode
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Links
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 23
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 239000004593 Epoxy Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The invention discloses an electric vehicle rechargeable battery, which comprises a shell, a battery pack, a charging and discharging seat, an anode wire and a cathode wire, wherein the battery pack is arranged in the shell; the positive electrode wires are provided with a plurality of positive electrode wires, one end of each positive electrode wire is electrically connected with the positive electrode of the battery pack, the other end of each positive electrode wire is electrically connected with the charge-discharge seat, and the resistances of the positive electrode wires are equal; the negative electrode lead is provided with a plurality of, and the one end electricity of negative electrode lead is connected in the negative electrode of group battery, and the other end electricity of negative electrode lead is connected in the charge-discharge seat, and the resistance of negative electrode lead equals. The application has the effect of reducing battery damage for protecting the lead wires.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a rechargeable battery of an electric vehicle.
Background
The rechargeable battery of the electric vehicle is an important component of the electric vehicle, the traditional rechargeable battery adopts a lead storage battery, customers purchase along with the whole vehicle, and the lithium battery gradually moves towards the electric vehicle along with the further development of the lithium battery.
In the related art, in the charge-discharge process of the battery, current charges and discharges through a wire connected between a charging port and the battery, in the long-time use process, along with the charge and discharge of the current in the wire, the wire has a certain resistance value, the current passes through the wire, the wire generates heat, the heat of the wire is continuously accumulated in the continuous charge-discharge process of the wire, the wire is easy to burn, and the problem of battery damage is caused.
Disclosure of Invention
In order to protect a lead and improve the problem of battery damage, the application provides an electric vehicle rechargeable battery.
The application provides an electric vehicle rechargeable battery adopts following technical scheme:
the rechargeable battery of the electric vehicle comprises a shell, a battery pack, a charging and discharging seat, an anode wire and a cathode wire, wherein the battery pack is arranged in the shell, and the charging and discharging seat is arranged at one end of the shell; the battery pack comprises a battery pack body, a charging seat, a discharging seat, a plurality of positive electrode wires, a plurality of negative electrode wires and a plurality of positive electrode wires, wherein one end of each positive electrode wire is electrically connected with a positive electrode of the battery pack, the other end of each positive electrode wire is electrically connected with the charging seat, and the resistances of the positive electrode wires are equal; the negative electrode lead is provided with a plurality of negative electrode leads, one end of each negative electrode lead is electrically connected with the negative electrode of the battery pack, the other end of each negative electrode lead is electrically connected with the charge-discharge seat, and the resistances of the negative electrode leads are equal.
By adopting the technical scheme, the original single wire is changed into a plurality of wires, and the current in the charging and discharging process is dispersed to each wire, so that the conductive currents are equal due to the fact that the resistance value of each wire is equal, the conductive currents of different wires are balanced, the burden of the single wire for carrying the current is reduced, the heat generated by the wires in the charging and discharging process is reduced, the occurrence of the burning condition of the wires is reduced, and the problem of damage to the battery is further improved; meanwhile, when a certain wire is damaged, the other wires can normally realize circuit conduction, so that the normal operation of the battery can be ensured.
Optionally, the positive electrode of the battery pack is electrically connected with a positive electrode conducting plate, one end of the positive electrode conducting wire, which is far away from the charging and discharging seat, is electrically connected with the positive electrode conducting plate, and spaces are reserved between the adjacent positive electrode conducting wires; the negative electrode of the battery pack is electrically connected with a negative electrode conducting strip, one end of the negative electrode conducting wire, which is far away from the charging and discharging seat, is electrically connected with the negative electrode conducting strip, and spaces are reserved between the adjacent negative electrode conducting wires.
By adopting the technical scheme, the positive electrode of the battery pack is additionally provided with the positive electrode conducting plate, the negative electrode of the battery pack is additionally provided with the negative electrode conducting plate, and the positive electrode conducting plate is connected with the positive electrode lead; the plurality of negative electrode wires are arranged at intervals through the negative electrode conducting plates, so that heat generated by the plurality of negative electrode wires is rapidly dissipated.
Optionally, the battery pack includes a first battery pack and a second battery pack, the first battery pack and the second battery pack are arranged side by side, a positive electrode of the first battery pack is electrically connected with the positive electrode wire, a negative electrode of the second battery pack is electrically connected with the negative electrode wire, and a negative electrode of the first battery pack is electrically connected with a positive electrode of the second battery pack.
Through adopting above-mentioned technical scheme, divide into first group battery and second group battery with the group battery to set up first group battery and second group battery side by side, with the height that reduces the group battery, and can set up anodal wire and negative pole wire in same end, need not the wire winding, make the arrangement of wire more regular, also make the group battery compacter.
Optionally, the negative electrode of the first battery pack is electrically connected with a negative electrode excessive conductive sheet, the positive electrode of the second battery pack is electrically connected with a positive electrode excessive conductive sheet, a plurality of conductive transition sheets are connected between the positive electrode excessive conductive sheet and the negative electrode excessive conductive sheet, and an interval is arranged between every two adjacent conductive transition sheets.
Through adopting above-mentioned technical scheme, the excessive conducting strip of negative pole and the excessive conducting strip of positive pole are connected with a plurality of conductive transition pieces, carry out the electric current circulation between first group battery and the second group battery, and conductive transition piece shunts the electric current, compares in through single direction, and the electric current conduction is more stable, if when certain conductive transition piece damages appears, other conductive transition pieces also can normally convey electric current for the battery can normally work.
Optionally, the first battery pack includes first mounting panel, second mounting panel and battery core, first mounting panel with all be provided with the mounting hole on the second mounting panel, on the first mounting panel the mounting hole with on the second mounting panel the mounting hole one-to-one, the battery core install in on the first mounting panel the mounting hole with on the second mounting panel between the mounting hole, fixed connection between the first mounting panel with the second mounting panel, the second battery pack with first battery pack structure is the same, the second mounting panel of first battery pack with the first mounting panel fixed connection of second battery pack.
Through adopting above-mentioned technical scheme, when assembling first group battery and second group battery, install the one end of battery core in the mounting hole of first mounting panel, install the other end of battery core in the mounting hole of second mounting panel, first mounting panel and second mounting panel fixed connection, the battery core is restricted in first mounting panel and second mounting panel, pass through installation Kong Jiaqi with the battery core, direct contact between the battery core has been reduced for all have the interval between the battery core, increase the heat dispersion of battery core during operation.
Optionally, a side surface of the first mounting plate, which is close to the second mounting plate, is communicated with a first sleeve, a first limit groove is formed in an end surface of the first sleeve, which is close to the second mounting plate, a side surface of the second mounting plate, which is close to the first mounting plate, is communicated with a second sleeve, a first limit sleeve is communicated with an end surface of the second sleeve, which is close to the first mounting plate, and the first limit sleeve is inserted into the first limit groove; the first mounting plate of second group battery is close to the side intercommunication of the second mounting plate of first group battery has the second stop collar, the second stop collar communicate in first sleeve pipe, the second mounting plate of first group battery is close to the first mounting plate of second group battery can a side be provided with the second spacing groove, the second spacing groove with second sleeve pipe intercommunication, the second stop collar peg graft in the second spacing groove, first sleeve pipe with wear to be equipped with first setting element in the second sleeve pipe will first group battery with second group battery fixed connection.
Through adopting above-mentioned technical scheme, when assembling first group battery and second group battery, assemble first group battery and second group battery respectively earlier, peg graft the first spacing sleeve pipe on the second sleeve pipe in the first spacing inslot of first intraductal, realize the grafting of first mounting panel and second mounting panel, first group battery and second group battery install, peg graft the second spacing sleeve pipe in the second spacing inslot again, realize the connection of first group battery and second group battery, penetrate first sleeve pipe and second intraductal through first setting element at last, first setting element is connected first group battery and second group battery, realize the equipment of group battery, be convenient for the equipment of group battery through the mode of above-mentioned grafting, and the stability that the group battery is connected is stronger.
Optionally, a side of the first mounting board near the second mounting board is communicated with a third sleeve, the third sleeve is near the end face of the second sleeve and is provided with a third limit groove, a side of the second mounting board near the first mounting board is communicated with a fourth sleeve, the fourth sleeve is near the end face of the first mounting board and is communicated with a third limit sleeve, the third limit sleeve is inserted in the third limit groove, and a second locating piece is arranged in the third sleeve and the fourth sleeve in a penetrating manner to fixedly connect the first mounting board and the second mounting board.
Through adopting above-mentioned technical scheme, when assembling first group battery and second group battery respectively, fourth sheathed tube third spacing sleeve inserts in third sheathed tube third spacing groove, penetrates the second setting element in third sleeve and fourth sleeve, and the second setting element is connected first mounting panel and second mounting panel, further strengthens the stability that first mounting panel and second mounting panel are connected to the equipment between first group battery and the second group battery.
Optionally, a side that first mounting panel with the second mounting panel kept away from each other all is connected with the stopper, the stopper extends to the drill way of mounting hole, the stopper is used for limiting the battery core.
Through adopting above-mentioned technical scheme, when the battery core inserts in the mounting hole, the stopper blocks battery core roll-off mounting hole, through the centre gripping of stopper on the first mounting panel and the stopper on the second mounting panel to the battery core to improve the stability of battery core after first group battery and the installation of second group battery.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the original single wire is changed into a plurality of wires, and the current in the charging and discharging process is dispersed to each wire, so that the conductive currents are equal due to the equal resistance value of each wire, so that the conductive currents of different wires are balanced, the burden of the single wire for carrying the current is reduced, the heat generated by the wires in the charging and discharging process is reduced, the burning condition of the wires is reduced, and the problem of damage to the battery is further improved; meanwhile, when a certain wire is damaged, the other wires can normally realize circuit conduction, so that the normal operation of the battery can be ensured;
2. the positive electrode of the battery pack is additionally provided with a positive electrode conducting plate, the negative electrode of the battery pack is additionally provided with a negative electrode conducting plate, and the positive electrode conducting plates are connected with positive electrode wires; the plurality of negative electrode wires are arranged at intervals through the negative electrode conducting plates, so that heat generated by the plurality of negative electrode wires is rapidly dissipated;
3. the negative pole excessively conductive sheet and the positive pole excessively conductive sheet are connected with a plurality of conductive transition sheets, current circulation is carried out between the first battery pack and the second battery pack, the conductive transition sheets shunt current, compared with the current conduction through single guide, the current conduction is more stable, if a certain conductive transition sheet is damaged, the rest conductive transition sheets can normally transmit current, so that the battery can normally work.
Drawings
Fig. 1 is a schematic view of the structure of a battery according to an embodiment of the present application.
Fig. 2 is a schematic view of an exploded structure of a battery according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a support frame according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of an exploded structure of a battery pack according to an embodiment of the present application.
Fig. 5 is a schematic view of another perspective exploded view of a battery pack according to an embodiment of the present application.
Fig. 6 is a schematic cross-sectional structure of a battery pack according to an embodiment of the present application.
Fig. 7 is a schematic cross-sectional structure of a battery cell and a mounting hole according to an embodiment of the present application.
Reference numerals illustrate:
01. welding plates; 02. a through hole; 03. a plug hole; 1. a housing; 11. a top cover; 111. an arc-shaped handle; 12. a housing; 13. a base; 131. a groove; 14. an epoxy board; 2. a first battery pack; 21. a positive electrode conductive sheet; 22. a negative electrode excessive conductive sheet; 23. a first mounting plate; 231. a first sleeve; 2311. a first limit groove; 232. a third sleeve; 2321. a third limit groove; 24. a second mounting plate; 241. a second sleeve; 2411. a first limit sleeve; 242. a fourth sleeve; 2421. the third limit sleeve; 25. a battery core; 26. a mounting hole; 261. a sliding groove; 262. an elastic sheet; 27. a limiting block; 28. a PET sheet; 3. a second battery pack; 31. a negative electrode conductive sheet; 32. an anode excessive conductive sheet; 33. the second limit sleeve; 34. the second limit groove; 4. a charge-discharge seat; 5. a positive electrode lead; 6. a negative electrode lead; 71. a conductive transition piece; 72. a conductive connecting piece; 81. a first positioning member; 82. a second positioning member; 9. a support frame; 91. an anode mounting groove; 92. a negative electrode mounting groove; 93. and a fuse.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
The embodiment of the application discloses an electric vehicle rechargeable battery. Referring to fig. 1 and 2, the battery includes a housing 1, a battery pack and a charge-discharge seat 4, the housing 1 includes a top cover 11, a housing 12 and a base 13, the top cover 11 is fixedly connected to the top end of the housing 12, the top surface of the top cover 11 is fixedly connected with an arc-shaped handle 111, and the base 13 is fixedly connected to the bottom end of the housing 12; the battery pack is arranged in the shell 12, an epoxy plate 14 is arranged on the end face of the top end of the battery pack, the epoxy plate 14 is fixedly connected to the bottom face of the top cover 11, a supporting frame 9 is fixedly connected to the bottom end of the battery pack, and the supporting frame 9 is fixedly connected to the base 13; the bottom surface of base 13 is provided with recess 131, and charge-discharge seat 4 installs in the bottom surface of recess 131, and charge-discharge seat 4 top passes the tank bottom of recess 131 and extends to the support frame 9 bottom surface.
Referring to fig. 2 and 3, the battery further includes a positive electrode lead 5 and a negative electrode lead 6, wherein the bottom surface of the supporting frame 9 is provided with a positive electrode mounting groove 91 and a negative electrode mounting groove 92, three positive electrode leads 5 are arranged, the positive electrode leads 5 are copper sheets, the positive electrode leads 5 are mounted in the positive electrode mounting groove 91, a fuse 93 is mounted in the positive electrode mounting groove 91, one end of each positive electrode lead 5 is electrically connected with one end of the fuse 93, the other end of each positive electrode lead 5 is electrically connected with the positive electrode of the battery pack, the other end of each fuse 93 is electrically connected with the charging and discharging seat 4, and the resistance values of the three positive electrode leads 5 are equal; the negative electrode lead 6 has three, and three negative electrode lead 6 are the copper sheet, and three negative electrode lead 6 are installed in negative electrode mounting groove 92, and the one end of three negative electrode lead 6 is connected with the negative electrode electricity of group battery, and the other end and the charge-discharge seat 4 electricity of three negative electrode lead 6 are connected, and the resistance value of three negative electrode lead 6 equals.
The original single positive electrode lead 5 is changed into three positive electrode leads 5, the original single negative electrode lead 6 is changed into three negative electrode leads 6, and as the resistance values of the three positive electrode leads 5 are equal, the resistance values of the three negative electrode leads 6 are equal, the current in the charging and discharging process is uniformly dispersed to each lead, and the current conducted by each lead of each pole is equal, so that the electric conduction of different leads is balanced, the burden of the single lead for bearing the current is reduced, the heat generated by the leads in the charging and discharging process is reduced, the occurrence of the burning condition of the leads is reduced, and the problem of battery damage is further improved; meanwhile, when a certain lead of the positive electrode or the negative electrode is damaged, the other leads can normally realize circuit conduction, so that the normal operation of the battery can be ensured.
Referring to fig. 2 and 4, the battery pack includes a first battery pack 2 and a second battery pack 3, the first battery pack 2 includes a first mounting plate 23, a second mounting plate 24 and a battery core 25, the first mounting plate 23 and the second mounting plate 24 are fixedly connected between the top cover 11 and the supporting frame 9, a plurality of mounting holes 26 are provided on the first mounting plate 23 and the second mounting plate 24, the plurality of mounting holes 26 are arranged in a plurality of rows along the length direction of the mounting plates, the mounting holes 26 on the first mounting plate 23 are in one-to-one correspondence with the mounting holes 26 on the second mounting plate 24, and the axes of the corresponding mounting holes 26 are collinear; the battery cells 25 are arranged between the mounting holes 26 on the first mounting plate 23 and the mounting holes 26 on the second mounting plate 24, the positive and negative poles of each row of adjacent battery cells 25 are opposite, the first mounting plate 23 and the second mounting plate 24 are fixedly connected, the battery cells 25 are separated through the design of the mounting holes 26, and each battery cell 25 is provided with a space, so that the stacking compression damage of the battery cells 25 is reduced, and the heat dissipation of the battery cells 25 during operation can be increased.
Referring to fig. 2 and 4, the second battery pack 3 and the first battery pack 2 have the same structure, the second mounting plate 24 of the first battery pack 2 is fixedly connected with the first mounting plate 23 of the second battery pack 3, the negative electrode of the battery core 25 of one row at the top of the first battery pack 2 is close to the positive electrode of the battery core 25 of one row at the top of the second battery pack 3, the positive electrode of the battery core 25 of one row at the bottom of the first battery pack 2 is close to the negative electrode of the battery core 25 of one row at the bottom of the second battery pack 3, and the first battery pack 2 and the second battery pack 3 are arranged side by side, so that the height of the battery packs can be reduced, and the structure is more compact.
Referring to fig. 4, a plurality of stoppers 27 are integrally formed on a side surface of the first mounting plate 23 and the second mounting plate 24 away from each other, each stopper 27 is located between each row of two adjacent mounting holes 26, the stoppers 27 extend to the openings of the mounting holes 26, two ends of the battery cells 25 are abutted against the stoppers 27, and the battery cells 25 are clamped by the stoppers 27 so as to prevent the battery cells 25 from sliding out of the mounting holes 26.
Referring to fig. 4 and 5, a side surface of the first mounting plate 23 of the first battery pack 2, which is far from the second mounting plate 24, is provided with a plurality of conductive connecting pieces 72, the conductive connecting pieces 72 are nickel pieces, and each conductive connecting piece 72 is electrically connected to the end surfaces of every two rows of adjacent battery cells 25; a plurality of conductive connecting pieces 72 are arranged on one side surface, far away from the first mounting plate 23, of the second mounting plate 24 of the second battery pack 3, the conductive connecting pieces 72 are nickel pieces, and each conductive connecting piece 72 is electrically connected to the end surface of each two rows of adjacent battery cells 25; the second mounting plate 24 of the first battery pack 2 is provided with a negative electrode excessive conductive sheet 22, a positive electrode conductive sheet 21 and a plurality of conductive connecting sheets 72 on one side surface far away from the first mounting plate 23, wherein the negative electrode excessive conductive sheet 22, the positive electrode conductive sheet 21 and the conductive connecting sheets 72 are nickel sheets, the negative electrode excessive conductive sheet 22 is electrically connected with the end surface of the battery core 25 of the top row, the positive electrode conductive sheet 21 is electrically connected with the end surface of the battery core 25 of the bottom row, and each conductive connecting sheet 72 is electrically connected with the end surfaces of each two adjacent battery cores 25 except the top row and the bottom row; the first mounting plate 23 of the second battery pack 3 is provided with an anode excessive conductive sheet 32, a cathode conductive sheet 31 and a plurality of conductive connecting sheets 72 on one side surface far away from the second mounting plate 24, the anode excessive conductive sheet 32, the cathode conductive sheet 31 and the conductive connecting sheets 72 are nickel sheets, the anode excessive conductive sheet 32 is electrically connected to the end surface of the battery core 25 of the top row, the cathode conductive sheet 31 is electrically connected to the end surface of the battery core 25 of the bottom row, each conductive connecting sheet 72 is electrically connected to the end surface of each two adjacent battery cores 25 except the end surfaces of the top row and the bottom row, three conductive transition sheets 71 are electrically connected between the anode excessive conductive sheet 32 and the cathode excessive conductive sheet 22, and the resistance values of the three conductive transition sheets 71 are equal.
Referring to fig. 4 and 5, through holes 02 corresponding to the mounting holes 26 on the first mounting plate 23 one by one are formed in the negative electrode excessive conductive sheet 22, the positive electrode excessive conductive sheet 32, the positive electrode conductive sheet 21, the negative electrode conductive sheet 31 and the conductive connecting sheet 72, welding plates 01 are integrally formed in the inner wall of the through holes 02, and the welding plates 01 are welded on the end face of the battery core 25; the anode excessive conductive sheet 22, the cathode excessive conductive sheet 32, the cathode conductive sheet 21, the anode conductive sheet 31 and the conductive connecting sheet 72 are provided with inserting holes 03 which are inserted with the limiting blocks 27, and the limiting blocks 27 can limit the battery core 25 and also position the anode excessive conductive sheet 22, the cathode excessive conductive sheet 32, the cathode conductive sheet 21, the anode conductive sheet 31 and the conductive connecting sheet 72; the PET sheet 28 is mounted on one side surface of the cathode excessive conductive sheet 22, the anode excessive conductive sheet 32, the anode conductive sheet 21, the cathode conductive sheet 31 and the conductive connecting sheet 72, which is far away from the battery core 25, an epoxy plate 14 is arranged between the first battery pack 2 and the second battery pack 3, one side of the epoxy plate 14 is abutted against the conductive sheet and the conductive connecting sheet of the first battery pack 2, and the other side of the epoxy plate 14 is abutted against the conductive sheet and the conductive connecting sheet 72 of the second battery pack 3.
The negative electrode lead 6 is connected with the charge-discharge seat 4, the positive electrode lead 5 is also connected with the charge-discharge seat 4, when the charge-discharge seat 4 is connected with an external load circuit, the positive electrode lead 5 and the negative electrode lead 6 are connected in a circuit connection mode, namely, the negative electrode lead 6 is communicated with the negative electrode conducting strip 31, the negative electrode conducting strip 31 is connected with the cathodes of the battery cores 25 of the bottom row of the second battery pack 3, each row of adjacent battery cores 25 is connected in series through the conducting connecting strip 72, the anodes of the battery cores 25 of the top row of the second battery pack 3 are connected with the anode excessive conducting strip 32, the cathodes of the battery cores 25 of the top row of the first battery pack 2 are connected with the cathode excessive conducting strip 22, the anode excessive conducting strip 32 is communicated with the cathode excessive conducting strip 22 through the conducting strip 71, each row of adjacent battery cores 25 of the first battery pack 2 are connected with the anode conducting strip 21 in series through the conducting strip 72, the anode conducting strip 21 is connected with the anode lead 5, and the anode lead 5 is connected with the charge-discharge seat 4 through the fuse 93, and the whole circuit connection is realized.
Referring to fig. 4, 5 and 6, one end of the three positive electrode wires 5, which is far from the fuse 93, is electrically connected to the positive electrode conductive sheet 21, the three positive electrode wires 5 are uniformly distributed along the length direction of the positive electrode conductive sheet 21, one end of the three negative electrode wires 6, which is far from the charge-discharge seat 4, is electrically connected to the negative electrode conductive sheet 31, and the three negative electrode wires 6 are uniformly distributed along the length direction of the negative electrode conductive sheet 31; three conductive transition pieces 71 are electrically connected between the negative electrode excessive conductive piece 22 and the positive electrode excessive conductive piece 32, the three conductive transition pieces 71 are uniformly distributed along the length direction of the negative electrode excessive conductive piece 22 and the positive electrode excessive conductive piece 32, the three positive electrode wires 5 are arranged at intervals, the three negative electrode wires 6 are also arranged at intervals, and the three conductive transition pieces 71 are also arranged at intervals, so that the positive electrode wires 5, the negative electrode wires 6 and the conductive transition pieces 71 can rapidly emit heat.
Referring to fig. 4 and 5, one side surface of the first mounting plate 23, which is close to the second mounting plate 24, is communicated with four first sleeves 231, wherein two first sleeves 231 are positioned on one side of the first mounting plate 23, the other two first sleeves 231 are positioned on the other side of the first mounting plate 23, a first limit groove 2311 is formed in the end surface of the first sleeve 231, which is close to the second mounting plate 24, four second sleeves 241 are communicated with one side surface of the second mounting plate 24, which is close to the first mounting plate 23, a first limit sleeve 2411 is communicated with the end surface of the second sleeve 241, which is close to the first mounting plate 23, and the first limit sleeve 2411 is inserted into the first limit groove 2311; a side surface of the first mounting plate 23 of the second battery pack 3, which is close to the second mounting plate 24 of the first battery pack 2, is communicated with a second limit sleeve 33, the second limit sleeve 33 is communicated with the first sleeve 231, a second limit groove 34 is formed in one side surface of the second mounting plate 24 of the first battery pack 2, which is close to the first mounting plate 23 of the second battery pack 3, the second limit groove 34 is communicated with the second sleeve 241, and the second limit sleeve 33 is inserted into the second limit groove 34.
Referring to fig. 4 and 5, a side surface of the first mounting plate 23 near the second mounting plate 24 is communicated with five third sleeves 232, wherein four third sleeves 232 are located at corners of the first mounting plate 23, another third sleeve 232 is located at a middle position of the first mounting plate 23, a third limiting groove 2321 is formed in an end surface of the third sleeve 232 near the second sleeve 241, five fourth sleeves 242 are communicated with a side surface of the second mounting plate 24 near the first mounting plate 23, a third limiting sleeve 2421 is communicated with an end surface of the fourth sleeve 242 near the first mounting plate 23, and the third limiting sleeve 2421 is inserted into the third limiting groove 2321.
Referring to fig. 6, first positioning members 81 are inserted into the first and second bushings 231 and 241, the first positioning members 81 are bolts fixedly connecting the first and second battery packs 2 and 3; the third sleeve 232 and the fourth sleeve 242 are also internally provided with a second positioning piece 82 in a penetrating way, the second positioning piece 82 is a bolt, and the first mounting plate 23 and the second mounting plate 24 are fixedly connected by the bolt.
When the battery pack is assembled, the first battery pack 2 and the second battery pack 3 are assembled respectively, the battery core 25 is inserted into the mounting hole 26 of the first mounting plate 23, then the mounting hole 26 of the second mounting plate 24 is aligned with the battery core 25, the third limiting sleeve 2421 of the fourth sleeve 242 is inserted into the third limiting groove 2321 of the third sleeve 232, bolts penetrate into the third sleeve 232 and the fourth sleeve 242, the first mounting plate 23 and the second mounting plate 24 are connected by the bolts, and meanwhile, the first limiting sleeve 2411 on the second sleeve 241 is inserted into the first limiting groove 2311 in the first sleeve 231 to realize the assembly of the first battery pack 2 and the second battery pack 3; and then the first battery pack 2 and the second battery pack 3 are assembled, the second limiting sleeve 33 is inserted into the second limiting groove 34, the connection of the first battery pack 2 and the second battery pack 3 is realized, the bolts penetrate into the first sleeve 231 and the second sleeve 241, and the first mounting plate 23 of the first battery pack 2 and the second mounting plate 24 of the second battery pack 3 are connected through the bolts, so that the quick installation of the battery packs can be realized.
Referring to fig. 7, the inner wall of the mounting hole is provided with four sliding grooves, the four sliding grooves are uniformly distributed around the inner circumferential surface of the mounting hole, the length direction of the sliding grooves is the same as the axis direction of the mounting hole, an elastic sheet is arranged in the sliding grooves, the elastic sheet is arranged along the length direction of the sliding grooves, one end of the elastic sheet, which is close to the battery core, is fixedly connected to the bottom of the sliding grooves, the other end of the elastic sheet is movably arranged, the middle position of the elastic sheet protrudes towards one side, which is far away from the bottom of the sliding grooves, the protruding part extends into the mounting hole, and the protruding part abuts against the peripheral side of the battery core.
When the diameter of the battery core is deviated, the battery core is filled into the mounting hole, the battery core is abutted against the surface of the elastic sheet, the battery core is continuously inserted into the mounting hole, the periphery of the battery core extrudes the protruding part of the elastic sheet, the elastic sheet stretches towards the movable end, and the periphery of the battery core is clamped by the four elastic sheets, so that the axis of the battery core is collinear with the axis of the mounting hole, and the battery core with different diameters can be adapted.
The implementation principle of the rechargeable battery of the electric vehicle in the embodiment of the application is as follows: the original single positive electrode lead 5 is changed into three positive electrode leads 5, the original single negative electrode lead 6 is changed into three negative electrode leads 6, the negative electrode excessive conductive sheet 22 and the positive electrode excessive conductive sheet 32 are also connected through three conductive transition sheets 71, the three positive electrode leads 5 are arranged at intervals, the three negative electrode leads 6 are also arranged at intervals, the three conductive transition sheets 71 are also arranged at intervals, as the resistance values of the three positive electrode leads 5 are equal, the resistance values of the three negative electrode leads 6 are equal, the resistance values of the three conductive transition sheets 71 are also equal, the current conducted by each negative electrode lead 6 is equal in the charging and discharging process, the current conducted by each positive electrode lead 5 is equal, the current conducted by each conductive transition sheet 71 is equal, so that the conduction of different leads is balanced, the load of the single lead is reduced, the heat generated by the leads in the charging and discharging process is reduced, the burning condition of the leads can be reduced, and the problem of battery damage can be improved; meanwhile, when a certain lead of the positive electrode or the negative electrode is damaged, the other leads can normally realize circuit conduction, so that the normal operation of the battery can be ensured.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (3)
1. An electric vehicle rechargeable battery, characterized in that: the battery pack is arranged in the shell (1), and the charging and discharging seat (4) is arranged at one end of the shell (1); the battery pack comprises a battery pack body, wherein a plurality of positive electrode wires (5) are arranged, one end of each positive electrode wire (5) is electrically connected with a positive electrode of the battery pack body, the other end of each positive electrode wire (5) is electrically connected with the charging and discharging seat (4), and the resistances of the positive electrode wires (5) are equal; the battery pack comprises a battery pack body, wherein a plurality of negative electrode wires (6) are arranged, one end of each negative electrode wire (6) is electrically connected with a negative electrode of the battery pack body, the other end of each negative electrode wire (6) is electrically connected with the charging and discharging seat (4), and the resistances of the negative electrode wires (6) are equal;
the battery pack comprises a first battery pack (2) and a second battery pack (3), wherein the first battery pack (2) and the second battery pack (3) are arranged side by side, the positive electrode of the first battery pack (2) is electrically connected with the positive electrode lead (5), the negative electrode of the second battery pack (3) is electrically connected with the negative electrode lead (6), and the negative electrode of the first battery pack (2) is electrically connected with the positive electrode of the second battery pack (3);
the first battery pack (2) comprises a first mounting plate (23), a second mounting plate (24) and a battery core (25), wherein mounting holes (26) are formed in the first mounting plate (23) and the second mounting plate (24), the mounting holes (26) in the first mounting plate (23) are in one-to-one correspondence with the mounting holes (26) in the second mounting plate (24), the battery core (25) is mounted between the mounting holes (26) in the first mounting plate (23) and the mounting holes (26) in the second mounting plate (24), the first mounting plate (23) is fixedly connected with the second mounting plate (24), the second battery pack (3) is identical to the first battery pack (2), and the second mounting plate (24) in the first battery pack (2) is fixedly connected with the first mounting plate (23) in the second battery pack (3);
a first sleeve (231) is communicated with one side surface of the first mounting plate, which is close to the second mounting plate (24), a first limit groove (2311) is formed in the end surface of the first sleeve (231), which is close to the second mounting plate (24), a second sleeve (241) is communicated with one side surface of the second mounting plate (24), which is close to the first mounting plate (23), a first limit sleeve (2411) is communicated with the end surface of the second sleeve (241), which is close to the first mounting plate (23), and the first limit sleeve (2411) is inserted into the first limit groove (2311); a second limit sleeve (33) is communicated with one side surface of the first mounting plate (23) of the second battery pack (3) close to the second mounting plate (24) of the first battery pack (2), the second limit sleeve (33) is communicated with the first sleeve (231), a second limit groove (34) is formed in one side surface of the second mounting plate (24) of the first battery pack (2) close to the first mounting plate (23) of the second battery pack (3), the second limit groove (34) is communicated with the second sleeve (241), the second limit sleeve (33) is inserted into the second limit groove (34), and a first positioning piece (81) is arranged in the first sleeve (231) and the second sleeve (241) in a penetrating manner to fixedly connect the first battery pack (2) with the second battery pack (3);
a third sleeve (232) is communicated with one side surface of the first mounting plate (23) close to the second mounting plate (24), a third limit groove (2321) is formed in the end surface of the third sleeve (232) close to the second sleeve (241), a fourth sleeve (242) is communicated with one side surface of the second mounting plate (24) close to the first mounting plate (23), a third limit sleeve (2421) is communicated with the end surface of the fourth sleeve (242) close to the first mounting plate (23), the third limit sleeve (2421) is inserted into the third limit groove (2321), and a second locating piece (82) is arranged in the third sleeve (232) and the fourth sleeve (242) in a penetrating mode to fixedly connect the first mounting plate (23) with the second mounting plate (24);
one side that first mounting panel (23) with second mounting panel (24) kept away from each other is all connected with stopper (27), stopper (27) extend to the drill way of mounting hole (26), stopper (27) are used for limiting battery core (25).
2. An electric vehicle rechargeable battery according to claim 1, wherein: the positive electrode of the battery pack is electrically connected with a positive electrode conducting plate (21), one end of the positive electrode conducting wire (5) far away from the charging and discharging seat (4) is electrically connected with the positive electrode conducting plate (21), and spaces are reserved between the adjacent positive electrode conducting wires (5); the negative electrode of the battery pack is electrically connected with a negative electrode conducting plate (31), one end of the negative electrode conducting wire (6) which is far away from the charge-discharge seat (4) is electrically connected with the negative electrode conducting plate (31), and spaces are reserved between the adjacent negative electrode conducting wires (6).
3. An electric vehicle rechargeable battery according to claim 1, wherein: the negative electrode of the first battery pack (2) is electrically connected with a negative electrode excessive conducting plate (22), the positive electrode of the second battery pack (3) is electrically connected with a positive electrode excessive conducting plate (32), a plurality of conductive transition plates (71) are connected between the positive electrode excessive conducting plate (32) and the negative electrode excessive conducting plate (22), and an interval is reserved between every two adjacent conductive transition plates (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210722563.6A CN115064839B (en) | 2022-06-24 | 2022-06-24 | Rechargeable battery of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210722563.6A CN115064839B (en) | 2022-06-24 | 2022-06-24 | Rechargeable battery of electric vehicle |
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| CN115064839A CN115064839A (en) | 2022-09-16 |
| CN115064839B true CN115064839B (en) | 2024-03-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063193A (en) * | 2016-11-08 | 2018-05-22 | 磐石电池股份有限公司 | With the cell parallel device for waiting resistance charge and discharge path |
| CN108075079A (en) * | 2017-11-24 | 2018-05-25 | 北斗航天汽车（北京）有限公司 | Lithium ion battery, lithium ion battery module and automobile |
| CN210429949U (en) * | 2019-11-04 | 2020-04-28 | 横店集团东磁股份有限公司 | Battery pack and electric bicycle |
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2022
- 2022-06-24 CN CN202210722563.6A patent/CN115064839B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063193A (en) * | 2016-11-08 | 2018-05-22 | 磐石电池股份有限公司 | With the cell parallel device for waiting resistance charge and discharge path |
| CN108075079A (en) * | 2017-11-24 | 2018-05-25 | 北斗航天汽车（北京）有限公司 | Lithium ion battery, lithium ion battery module and automobile |
| CN210429949U (en) * | 2019-11-04 | 2020-04-28 | 横店集团东磁股份有限公司 | Battery pack and electric bicycle |
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| CN115064839A (en) | 2022-09-16 |
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