WO2024149406A1 - 电池包及电动汽车 - Google Patents

电池包及电动汽车 Download PDF

Info

Publication number
WO2024149406A1
WO2024149406A1 PCT/CN2024/078915 CN2024078915W WO2024149406A1 WO 2024149406 A1 WO2024149406 A1 WO 2024149406A1 CN 2024078915 W CN2024078915 W CN 2024078915W WO 2024149406 A1 WO2024149406 A1 WO 2024149406A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
energy distribution
interface
positive
negative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/078915
Other languages
English (en)
French (fr)
Inventor
廖虎龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eve Energy Co Ltd
Original Assignee
Eve Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202322046999.0U external-priority patent/CN220895779U/zh
Priority claimed from CN202310958343.8A external-priority patent/CN116995367A/zh
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Priority to EP24741400.6A priority Critical patent/EP4518004A4/en
Priority to DE212024000038.8U priority patent/DE212024000038U1/de
Publication of WO2024149406A1 publication Critical patent/WO2024149406A1/zh
Priority to US18/961,315 priority patent/US20250087768A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/249—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • 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
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/08—Three-wire DC power distribution systems; Systems having more than three wires
    • H02J1/082—DC supplies with two or more different DC voltage levels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
    • H02J2105/33—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
    • H02J2105/37—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
    • 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

Definitions

  • the present application relates to the field of new energy vehicle technology, for example, to a battery pack and an electric vehicle.
  • the battery packs of new energy vehicles have gradually evolved from the cell to module (CTM) architecture to the module-free battery pack (CTP) architecture.
  • CTM cell to module
  • CTP module-free battery pack
  • the CTP architecture integrates the battery cells directly into the battery pack, eliminating the assembly steps required for the traditional module architecture, making the battery pack more compact and integrated.
  • the CTP architecture improves the energy density of the battery pack, but also poses new challenges to the rationality of the internal design of the battery pack. Due to the relatively limited internal space of the battery pack and the relatively compact internal structure, the battery pack has poor impact resistance and control reliability.
  • the present application provides a battery pack and an electric vehicle to enhance the impact resistance and control reliability of the battery pack.
  • an embodiment of the present application provides a battery pack, which includes: a plurality of battery cells; a flexible composite row, the flexible composite row being connected to the battery cells; a battery energy distribution module, the battery energy distribution module being connected to the flexible composite row; a control module, the control module being connected to the battery energy distribution module; the control module being configured to control the disconnection of the battery energy distribution module; an external interface, the external interface being connected to the control module; the external interface being configured to be connected to an external circuit; wherein the circuit connecting the battery energy distribution module to the external interface is configured as a high-voltage circuit; the circuit connecting the control module to the external interface is configured as a low-voltage circuit; the low-voltage circuit and the high-voltage circuit are arranged separately.
  • the flexible composite bar includes: an electrode O-state aluminum bar and a soft copper bar; the electrode O-state aluminum bar is fixed on the electrode of the battery cell; one end of the soft copper bar is connected to the electrode O-state aluminum bar; and the other end of the soft copper bar is connected to the battery energy distribution module.
  • the battery cell is arranged in the central area of the battery pack, and the high-voltage circuit runs through the central area of the battery pack; the low-voltage circuit is arranged on one side of the central area of the battery pack; the high-voltage circuit is arranged in parallel with the low-voltage circuit.
  • the flexible composite bar further comprises: a composite bar bracket; the composite bar bracket is configured to support the soft copper bar.
  • the battery cells are connected through a flexible integrated busbar;
  • the flexible integrated busbar includes: a battery cell O-state aluminum busbar, a flexible circuit board and a busbar bracket;
  • the battery cell O-state aluminum busbar is fixed to the battery cell through the busbar bracket;
  • the flexible circuit board is arranged on one side of the busbar bracket;
  • the busbar bracket is arranged to support the battery cell O-state aluminum busbar and the flexible circuit board.
  • the battery energy distribution module includes a positive battery energy distribution unit and a negative battery energy distribution unit; the positive electrode of the battery cell is connected to the power supply end of the positive battery energy distribution unit through the flexible composite row, and the negative electrode of the battery cell is connected to the power supply end of the negative battery energy distribution unit through the flexible composite row.
  • the external interface includes: a fast charging interface, a discharge interface, a slow charging interface and a communication interface; the positive pole of the fast charging interface is connected to the fast charging positive terminal of the positive battery energy distribution unit; the negative pole of the fast charging interface is connected to the fast charging negative terminal of the negative battery energy distribution unit; the data end of the fast charging interface is connected to the control module; the positive pole of the discharge interface is connected to the discharge positive terminal of the positive battery energy distribution unit; the negative terminal of the discharge interface is connected to the discharge negative terminal of the negative battery energy distribution unit; the data end of the discharge interface is connected to the control module; the positive terminal of the slow charging interface is connected to the slow charging positive terminal of the positive battery energy distribution unit; the slow charging interface is connected to the slow charging negative terminal of the negative battery energy distribution unit; the data end of the slow charging interface is connected to the control module; the communication interface is connected to the control module; the battery pack also includes: a shell, the fast charging interface and the discharge interface are located at a first side edge of the shell, and the slow charging
  • the battery energy distribution module also includes: a positive current collection unit and a negative current collection unit; the positive current collection unit is connected in series to the positive battery energy distribution unit; the negative current collection unit is connected in series to the negative battery energy distribution unit; the positive current collection unit is configured to collect the current of the positive battery energy distribution unit; the negative current collection unit is configured to collect the current of the negative battery energy distribution unit; the area where the positive current collection unit and the negative current collection unit are located is located between the area where the fast charging interface and the discharge interface are located and the area where the battery cell is located; the high-voltage circuit includes: a circuit where the battery cell is connected to the battery energy distribution module, a circuit where the battery energy distribution module is connected to the fast charging interface, and a circuit between the discharge interface and the slow charging interface.
  • the control module includes: a main board and at least one slave board; the fast charging data terminal of the main board is connected to the fast charging interface; the slow charging data terminal of the main board is connected to the slow charging interface; the discharge data terminal of the main board is connected to the discharge interface; the first communication terminal of the main board is connected to the communication interface; the first control terminal of the main board is connected to the control terminal of the positive battery energy distribution unit; the second control terminal of the main board is connected to the control terminal of the negative battery energy distribution unit; the positive current acquisition terminal of the main board is connected to the positive current acquisition unit; the negative current acquisition terminal of the main board is connected to the negative current acquisition unit; the main board is configured to obtain charging and discharging data and external communication; the data acquisition terminal of the slave board is connected to the battery cell; the communication terminal of the slave board is connected to the second communication terminal of the main board; the slave board is configured to obtain the temperature and voltage of the battery cell; the low-voltage circuit includes: the circuit of the main board connected to the slave board, the circuit of the circuit of the
  • the battery pack is provided with a voltage and temperature acquisition interface; the voltage and temperature acquisition interface is configured to output voltage data and temperature data of the battery cell; the voltage and temperature acquisition interface is connected to the slave board; the voltage and temperature acquisition interface is arranged on the second side of the battery cell; wherein the second side of the battery cell is a side close to the second side edge of the outer shell.
  • the main board and the battery energy distribution module are arranged on the same side of the housing; and the slave board is arranged on a side away from the main board.
  • an embodiment of the present application provides an electric vehicle, which includes a battery pack as described in any of the above embodiments.
  • the embodiment of the present application adopts a connection structure of a flexible composite row in the battery pack, so that the flexible composite row is directly connected to the battery cell, and there is no need to set an output pole fixing seat in the battery cell; the flexible composite row can be bent and used to absorb the production errors of various components of the battery pack and absorb the impact of the battery pack during use; and the high-voltage circuit and the low-voltage circuit are set separately to reduce the overlapping length of the low-voltage circuit and the high-voltage circuit, and reduce the impact of the high-voltage circuit on the low-voltage circuit.
  • Such a design architecture of the embodiment of the present application is conducive to the assembly of the battery pack, improves production efficiency, and enhances the impact resistance and control reliability of the battery pack.
  • FIG1 is a schematic diagram of a battery pack provided in an embodiment of the present application.
  • FIG2 is a structural diagram of a battery pack provided in an embodiment of the present application.
  • FIG3 is a partial enlarged view of a battery pack provided in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an electric vehicle provided in an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a battery pack provided in an embodiment of the present application.
  • FIG. 2 is an architecture diagram of a battery pack provided in an embodiment of the present application.
  • FIG. 3 is a partial enlarged view of a battery pack provided in an embodiment of the present application.
  • the battery pack includes: a plurality of battery cells 110, a flexible composite row 210, a battery energy distribution module 120, a control module 130 and an external interface 140.
  • the flexible composite row 210 can be used as a power busbar.
  • the flexible composite row 210 is connected between the power supply and the battery energy distribution module 120, thereby providing electrical energy to the battery energy distribution module 120, and then transmitting the electrical energy stored in the battery cell 110 to the outside world.
  • the flexible composite row 210 has good flexibility, can be used under bending conditions, and has good impact resistance.
  • the connection structure of the flexible composite row 210 is used in the battery pack, and the flexible composite row 210 can be used to absorb the production errors of multiple components of the battery pack.
  • the battery energy distribution module 120 is composed of a battery energy distribution unit (BDU), which controls the power-on and power-off process, pre-charging process and charging process of the high-voltage electrical circuit.
  • BDU battery energy distribution unit
  • the battery energy distribution module 120 is directly connected to the battery cell 110 through the flexible composite row 210, and there is no need to set an output pole fixing seat in the battery cell 110.
  • the connection between the flexible composite row 210 and the battery cell 110 is fixed by bolts.
  • the low-voltage circuit 20 is configured to transmit external communication signals to the control module 130, and is configured to transmit control signals to the battery energy distribution module 120. Therefore, the low-voltage circuit 20 has relatively high requirements for the accuracy of signal transmission.
  • the high-voltage circuit 10 will produce a current magnetic effect, generating a certain magnetic field within a certain range around the high-voltage circuit 10.
  • the current magnetic effect refers to the phenomenon that any wire that carries current can generate a magnetic field around it. Since the high-voltage circuit 10 bears the load of the entire vehicle's electrical appliances, the current of the high-voltage circuit 10 during the charging and discharging process is relatively large, and the current magnetic effect of the high-voltage circuit 10 is also relatively strong. Therefore, when the battery pack is working, there is strong electromagnetic interference around the high-voltage circuit 10. When the low-voltage circuit 20 is relatively close to the high-voltage circuit 10, the high-voltage circuit 10 will interfere with the low-voltage circuit 20.
  • the battery cell is arranged at the center of the battery pack, and the high-voltage circuit 10 is arranged separately from the low-voltage circuit 20.
  • the high-voltage circuit 10 is arranged at the first side edge of the battery pack and the center of the battery pack, and the low-voltage circuit 20 is arranged at the four side edges of the battery pack.
  • the embodiment of the present application adopts a connection structure of a flexible composite row in the battery pack, so that the flexible composite row 210 is directly connected to the battery cell 110, and there is no need to set an output pole fixing seat in the battery cell 110; the flexible composite row 210 is used to absorb the production errors of multiple components of the battery pack and absorb the impact during the use of the battery pack; and the high-voltage circuit 10 and the low-voltage circuit 20 are set separately to reduce the overlapping length of the low-voltage circuit 20 and the high-voltage circuit 10, and reduce the impact of the high-voltage circuit 10 on the low-voltage circuit 20.
  • Such a design architecture of the embodiment of the present application is conducive to the assembly of the battery pack, improves production efficiency, and enhances the impact resistance and control reliability of the battery pack.
  • the battery energy distribution module 120 includes a positive battery energy distribution unit 121 and a negative battery energy distribution unit 122, the positive electrode of the battery cell 110 is connected to the power supply end of the positive battery energy distribution unit 121 through a flexible composite row 210, and the negative electrode of the battery cell 110 is connected to the power supply end of the negative battery energy distribution unit 122 through a flexible composite row 210;
  • the flexible composite row 210 includes: an electrode O-state aluminum row 211 and a soft copper row 212; the electrode O-state aluminum row 211 is fixed on the electrode of the battery cell 110; one end of the soft copper row 212 is connected to the electrode O-state aluminum row 211; the other end of the soft copper row 212 is connected to the battery energy distribution module 120.
  • the battery pack has a total positive electrode and a total negative electrode.
  • the total positive electrode and the total negative electrode of the battery pack are connected to the positive battery energy distribution unit 121 and the negative battery energy distribution unit 121 respectively through the flexible composite bar 210.
  • the electrode O-state aluminum bar 211 is fixed on the total positive electrode and the total negative electrode of the battery pack, providing a reliable connection point for the connection between the soft copper bar 212 and the battery cell 110.
  • the material of the soft copper bar 212 is relatively soft, the battery cell 110 can be considered as a rigid body for the soft copper bar 212, and the soft copper bar 212 can be considered as a flexible body.
  • the flexible body is directly connected to the rigid body, it is limited by the material properties of the flexible body. In actual application, the flexible body is easier to wear than the rigid body. Therefore, in the connection between the rigid body and the flexible body, an additional connection structure needs to be set to connect the rigid body and the flexible body.
  • the positive battery energy distribution unit 121 and the negative battery energy distribution unit 122 can be of the same structure or of different structures, which can be determined according to actual needs in practical applications, and this embodiment does not limit this. It can be understood that the positive battery energy distribution unit 121 and/or the negative battery energy distribution unit 122 of different structures have different settings for the interface, which also results in different lengths of the required flexible composite row 210. Therefore, in practical applications, the length of the flexible composite row 210 can be determined according to actual needs, and this embodiment also does not limit this.
  • the connection method between the electrode O-state aluminum bar 211 of the flexible composite bar 210 and the battery cell 110 can be a bolted fixed connection, an opening is provided at the electrode of the battery cell 110, and the electrode O-state aluminum bar 211 is also provided with an opening corresponding to the electrode opening, and the bolts fix the electrode O-state aluminum bar 211 to the battery cell 110 through the opening of the electrode O-state aluminum bar 211 and the opening at the electrode of the output module 110;
  • the connection method between the electrode O-state aluminum bar 211 of the flexible composite bar 210 and the battery cell 110 can also be a snap-on connection, and the electrode O-state aluminum bar 211 and the battery cell 110 are both provided with a snap-on structure, and the electrode O-state aluminum bar 211 is fixed to the battery cell 110 through the snap-on structure.
  • the battery cell 110 is arranged in the central area of the battery pack, and the high-voltage circuit 10 runs through the central area of the battery pack; the low-voltage circuit 20 is arranged on one side of the central area of the battery pack; the high-voltage circuit 10 and the low-voltage circuit 20 are arranged in parallel.
  • the flexible composite bar 210 further includes: a composite bar bracket 213; the composite bar bracket 213 is configured to support the soft copper bar 212. It can be understood that a busbar fixing sleeve is provided on the composite bar bracket 213, and the soft copper bar 212 passes through the busbar fixing sleeve and is reliably connected to the composite bar bracket 213.
  • the battery cells 110 are connected by a flexible integrated busbar 160 ;
  • the flexible integrated busbar 160 includes: a battery cell O-state aluminum busbar 161 , a flexible circuit board 162 and a busbar bracket 163 .
  • the cell O-state aluminum bar 161 is fixed to the cell 110 through the busbar bracket 163 ; the flexible circuit board 160 is arranged on one side of the busbar bracket 163 ; the busbar bracket 163 is arranged to support the cell O-state aluminum bar 161 and the flexible circuit board 162 .
  • the cell O-state aluminum bar 161 includes a first aluminum bar, a second aluminum bar and a third aluminum bar.
  • a plurality of battery cells 110 are arranged in parallel in the battery pack, and the polarities of the electrodes of two adjacent battery cells 110 in the battery pack are opposite.
  • the electrodes of the battery cells 110 are arranged up and down, the electrode located at the upper position of a battery cell 110 is a positive electrode, and the electrode located at the lower position is a negative electrode, and the polarity of the battery cell adjacent to the battery cell 110 is opposite to that, that is, the electrode located at the upper position is a negative electrode, and the electrode located at the lower position is a positive electrode.
  • the battery pack includes a plurality of battery cells 110 arranged in this way, a row of electrodes located at the upper position is an upper electrode group, and a row of electrodes located at the lower position is a lower electrode group.
  • the plurality of electrodes of the upper electrode group of the first battery cell group are connected to each other through the first aluminum row
  • the plurality of electrodes of the lower electrode group of the first battery cell group are connected to each other through the second aluminum row
  • the plurality of electrodes of the lower electrode group of the second battery cell group are connected to each other through the third aluminum row. That is, the plurality of battery cells in the first battery cell group and the plurality of battery cells in the second battery cell group are connected in series through the battery cell O-state aluminum row 161.
  • the flexible circuit board is configured to collect the temperature and voltage of the battery cell, and output the collected temperature data and voltage data to the control module 130 .
  • the external interface 140 includes: a fast charging interface 141 , a discharging interface 142 , a slow charging interface 143 and a communication interface 144 .
  • the positive pole of the fast charging interface 141 is connected to the fast charging positive terminal of the positive battery energy distribution unit 121; the negative pole of the fast charging interface 141 is connected to the fast charging negative terminal of the negative battery energy distribution unit 122; the data end of the fast charging interface 141 is connected to the control module 130; the positive pole of the discharge interface 142 is connected to the discharge positive terminal of the positive battery energy distribution unit 121; the negative terminal of the discharge interface 142 is connected to the discharge negative terminal of the negative battery energy distribution unit 122; the data end of the discharge interface 142 is connected to the control module 130; the positive terminal of the slow charging interface 143 is connected to the slow charging positive terminal of the positive battery energy distribution unit 121; the slow charging interface 143 is connected to the slow charging negative terminal of the negative battery energy distribution unit 122; the data end of the slow charging interface 143 is connected to the control module 130; the communication interface 144 is connected to the control module 130.
  • connection between the positive electrode of the fast charging interface 141 and the fast charging positive terminal of the positive battery energy distribution unit 121 adopts a 20 ⁇ 3mm2 hard copper busbar; the connection between the negative electrode of the fast charging interface 141 and the fast charging negative terminal of the negative battery energy distribution unit 122 adopts a 20 ⁇ 3mm2 hard copper busbar; the connection between the positive electrode of the discharge interface 142 and the discharge positive terminal of the positive battery energy distribution unit 121 adopts a 20 ⁇ 2mm2 hard copper busbar; the connection between the negative terminal of the discharge interface 142 and the discharge negative terminal of the negative battery energy distribution unit 122 adopts a 20 ⁇ 3mm2 hard copper busbar; the connection between the battery cell 110 and the power supply terminal of the positive battery energy distribution unit 121 adopts a combination of 40 ⁇ 2.5mm2 O-state aluminum (1060O-state aluminum) and 20 ⁇ 3mm2 soft copper busbar; the connection between the battery cell 110 and the power supply terminal of the negative battery energy distribution unit 122 adopts a 40 ⁇ 2.5mm 2O -state
  • the battery pack also includes: a shell 150, a fast charging interface 141 and a discharge interface 142 located at a first side edge of the shell 150, and a slow charging interface 143 and a communication interface 144 located at a second side edge of the shell 150; the first side edge and the second side edge are arranged relative to each other.
  • the battery energy distribution module 120 further includes: a positive current collection unit 123 and a negative current collection unit 124;
  • the positive current collection unit 123 is connected in series to the positive battery energy distribution unit 121; the negative current collection unit 124 is connected in series to the negative battery energy distribution unit 122; the positive current collection unit 123 is configured to collect the current of the positive battery energy distribution unit 121; the negative current collection unit 124 is configured to collect the current of the negative battery energy distribution unit 122.
  • the area where the positive current collection unit 123 and the negative current collection unit 124 are located is located between the area where the fast charging interface 141 and the discharge interface 142 are located and the area where the battery cell 110 is located.
  • the high-voltage circuit 10 includes: a circuit connecting the battery cell 110 to the battery energy distribution module 120 , a circuit connecting the battery energy distribution module 120 to the fast-charging interface 141 , and a circuit connecting the discharge interface 142 and the slow-charging interface 143 .
  • control module 130 includes: a main board 131 and at least one slave board 132 .
  • the fast charging data terminal of the main board 131 is connected to the fast charging interface 141; the slow charging data terminal of the main board 131 is connected to the slow charging interface 143; the discharge data terminal of the main board 131 is connected to the discharge interface 142; the first communication terminal of the main board 131 is connected to the communication interface 144; the first control terminal of the main board 131 is connected to the control terminal of the positive battery energy distribution unit 121; the second control terminal of the main board 131 is connected to the control terminal of the negative battery energy distribution unit 122; the positive current collection terminal of the main board 131 is connected to the positive current collection unit 123; the negative current collection terminal of the main board 131 is connected to the negative current collection unit 124; the main board 131 is configured to obtain charging and discharging data and external communication; the data collection terminal of the slave board 132 is connected to the battery cell 110; the communication terminal of the slave board 132 is connected to the second communication terminal of the main board 131; the slave board 132 is configured to obtain the temperature and voltage of the battery cell 110
  • the low-voltage circuit 20 includes: a circuit connecting the main board 131 to the slave board 132 , a circuit connecting the main board 131 to the communication interface 144 , and a circuit connecting the slave board 132 to the battery cell 110 .
  • the battery pack is provided with a voltage and temperature acquisition interface 111; the voltage and temperature acquisition interface 111 is configured to output the voltage data and temperature data of the battery cell 110; the voltage and temperature acquisition interface 111 is connected to the slave board 132; the voltage and temperature acquisition interface 111 is provided on the second side of the battery cell 110; wherein the second side of the battery cell 110 is a side close to the second side edge of the housing 150.
  • the flexible circuit board 162 of the flexible integrated busbar 160 is connected to the slave board 132 through the voltage and temperature acquisition interface 111, and the flexible circuit board 162 transmits the collected temperature data and voltage data of the battery cell 110 to the slave board 132 through the voltage and temperature acquisition interface 111, and then transmits the temperature data and voltage data to the main board 131.
  • the main board 131 and the battery energy distribution module 120 are arranged on the same side of the housing 150 ; the slave board 132 is arranged on a side away from the main board 131 .
  • the internal space of the battery pack housing 150 is limited, and the current collection accuracy of the positive current collection unit 123 and the negative current collection unit 124 is affected by the length of the collection harness.
  • the collection harness includes a positive collection harness and a negative collection harness.
  • the connection line connecting the mainboard 131 to the positive current collection unit 123 is the positive collection harness, and the connection line connecting the mainboard 131 to the negative current collection unit 124 is the negative collection harness. Therefore, the mainboard 131 and the battery energy distribution module 120 are arranged on the same side.
  • FIG4 is a schematic diagram of an electric vehicle provided in an embodiment of the present application.
  • the electric vehicle 20 includes a battery pack 10 provided in any of the above embodiments. It is understood that the relative position of the battery pack 10 and the vehicle body in FIG4 is only for illustration, and the battery pack 10 can also be installed in other positions such as the rear or middle of the electric vehicle 20, which is not limited in this embodiment.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池包及电动汽车。该电池板包括：多个电芯（110）、柔性复合排（210）、电池能量分配模块（120）、控制模块（130）和对外接口（140）。柔性复合排（210）与电芯（110）连接；电池能量分配模块（120）与柔性复合排（210）连接；控制模块（130）与电池能量分配模块（120）连接；控制模块（130）设置为控制电池能量分配模块（120）的开断；对外接口（140）与控制模块（130）连接；对外接口（140）设置为与外部电路连接；其中，电池能量分配模块（120）与对外接口（140）连接的回路被配置为高压回路（10）；控制模块（130）与对外接口（140）连接的回路被配置为低压回路（20）；低压回路（20）和高压回路（10）分开设置。

Description

电池包及电动汽车
本申请要求在2023年08月01日提交中国专利局、申请号为202310958343.8的中国专利申请的优先权，以及在2023年08月01日提交中国专利局、申请号为202322046999.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及新能源汽车技术领域，例如涉及一种电池包及电动汽车。
 背景技术
随着新能源汽车的发展，新能源汽车的电池包逐渐从电芯到模组（Cell To Module，CTM）架构向无模组电池包（Cell To Pack，CTP）架构发展。CTP架构将电芯直接集成到电池包中，省去了传统模组架构所需的组装步骤，使电池包更为紧凑和集成化。CTP架构提升了电池包的能量密度，同时也对电池包内部设计的合理性提出了新的挑战。由于电池包内部空间相对拮据，内部结构设置较为紧凑，电池包的抗冲击性和控制可靠性较差。
 发明内容
本申请提供了一种电池包及电动汽车，以增强电池包的抗冲击性能以及控制可靠性。
第一方面，本申请实施例提供了一种电池包，该电池包包括：多个电芯；柔性复合排，所述柔性复合排与所述电芯连接；电池能量分配模块，所述电池能量分配模块与所述柔性复合排连接；控制模块，所述控制模块与所述电池能量分配模块连接；所述控制模块设置为控制所述电池能量分配模块的开断；对外接口，所述对外接口与所述控制模块连接；所述对外接口设置为与外部电路连接；其中，所述电池能量分配模块与对外接口连接的回路被配置为高压回路；所述控制模块与所述对外接口连接的回路被配置为低压回路；所述低压回路和所述高压回路分开设置。
在一实施例中，所述柔性复合排包括：电极O态铝排和软铜排；所述电极O态铝排固定于所述电芯的电极上；所述软铜排的一端与所述电极O态铝排连接；所述软铜排的另一端与所述电池能量分配模块连接。
在一实施例中，所述电芯设置于所述电池包的中心区域，所述高压回路贯穿于所述电池包的中心区域；所述低压回路设置于所述电池包中心区域的一侧；所述高压回路与所述低压回路平行设置。
在一实施例中，所述柔性复合排还包括：复合排支架；所述复合排支架设置为支撑所述软铜排。
在一实施例中，所述电芯间通过柔性集成母排连接；所述柔性集成母排包括：电芯O态铝排、柔性电路板和母排支架；所述电芯O态铝排通过所述母排支架固定于所述电芯上；所述柔性电路板设置于所述母排支架的一侧；所述母排支架设置为支撑所述电芯O态铝排和所述柔性电路板。
在一实施例中，所述电池能量分配模块包括正极电池能量分配单元和负极电池能量分配单元；所述电芯的正极通过所述柔性复合排与所述正极电池能量分配单元的电源端连接，所述电芯的负极通过所述柔性复合排与所述负极电池能量分配单元的电源端连接。
在一实施例中，所述对外接口包括：快充接口、放电接口、慢充接口和通讯接口；所述快充接口的正极与所述正极电池能量分配单元的快充正极端连接；所述快充接口的负极与所述负极电池能量分配单元的快充负极端连接；所述快充接口的数据端与所述控制模块连接；所述放电接口的正极与所述正极电池能量分配单元的放电正极端连接；所述放电接口的负极端与所述负极电池能量分配单元的放电负极端连接；所述放电接口的数据端与所述控制模块连接；所述慢充接口的正极端与所述正极电池能量分配单元的慢充正极端连接；所述慢充接口与所述负极电池能量分配单元的慢充负极端连接；所述慢充接口的数据端与所述控制模块连接；所述通讯接口与所述控制模块连接；所述电池包还包括：外壳，所述快充接口和所述放电接口位于所述外壳的第一侧边缘，所述慢充接口和通讯接口位于所述外壳的第二侧边缘；所述第一侧边缘和所述第二侧边缘相对设置。
在一实施例中，所述电池能量分配模块还包括：正极电流采集单元和负极电流采集单元；所述正极电流采集单元串联于所述正极电池能量分配单元中；所述负极电流采集单元串联于所述负极电池能量分配单元中；所述正极电流采集单元设置为采集所述正极电池能量分配单元的电流；所述负极电流采集单元设置为采集所述负极电池能量分配单元的电流；所述正极电流采集单元和所述负极电流采集单元所在的区域位于所述快充接口和所述放电接口所在的区域和所述电芯所在的区域之间；所述高压回路包括：所述电芯连接至所述电池能量分配模块的回路、所述电池能量分配模块连接至所述快充接口，以及，所述放电接口和所述慢充接口的回路。
在一实施例中，所述控制模块包括：主板和至少一个从板；所述主板的快充数据端与所述快充接口连接；所述主板的慢充数据端与所述慢充接口连接；所述主板的放电数据端与所述放电接口连接；所述主板的第一通讯端与所述通讯接口连接；所述主板的第一控制端与所述正极电池能量分配单元的控制端连接；所述主板的第二控制端与所述负极电池能量分配单元的控制端连接；所述主板的正极电流采集端与正极电流采集单元连接；所述主板的负极电流采集端与负极电流采集单元连接；所述主板设置为获取充放电数据和对外通讯；所述从板的数据采集端与所述电芯连接；所述从板的通讯端与所述主板的第二通讯端连接；所述从板设置为获取所述电芯的温度和电压；所述低压回路包括：所述主板连接至所述从板的回路、所述主板连接至所述通讯接口的回路，以及，所述从板连接至所述电芯的回路。
在一实施例中，所述电池包设置有电压温度采集接口；所述电压温度采集接口设置为输出所述电芯的电压数据和温度数据；所述电压温度采集接口与所述从板连接；所述电压温度采集接口设置于所述电芯的第二侧；其中，所述电芯的第二侧为靠近外壳的第二侧边缘的一侧。
在一实施例中，所述主板与所述电池能量分配模块设置于所述外壳的同一侧；所述从板设置于远离所述主板的一侧。
第二方面，本申请实施例提供了一种电动汽车，该电动汽车包括以上任一实施例所述的电池包。
本申请的有益效果：
本申请实施例在电池包中采用柔性复合排的连接结构，使柔性复合排直接与电芯连接，无需在电芯中设置输出极固定座；利用柔性复合排可弯折使用的特性吸收电池包各个部件的生产误差以及吸收电池包使用过程中的冲击；并且将高压回路与低压回路分开设置，减少低压回路与高压回路的交叠长度，降低高压回路对低压回路的影响。本申请实施例这样的设计架构有利于电池包的装配，提高生产效率，增强电池包的抗冲击性能以及控制可靠性。
 附图说明
图1是本申请实施例提供的一种电池包的示意图；
图2是本申请实施例提供的一种电池包的架构图；
图3是本申请实施例提供的一种电池包的局部放大图；
图4是本申请实施例提供的一种电动汽车的示意图。
 具体实施方式
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例提供了一种电池包。该电池包为电动汽车的能源系统提供了一种新的架构。图1是本申请实施例提供的一种电池包的示意图。图2是本申请实施例提供的一种电池包的架构图。图3是本申请实施例提供的一种电池包的局部放大图。结合图1-图3，该电池包包括：多个电芯110、柔性复合排210、电池能量分配模块120、控制模块130和对外接口140。
多个电芯110；柔性复合排210与电芯110连接；电池能量分配模块120与柔性复合排210连接；控制模块130与电池能量分配模块120连接；控制模块130设置为控制电池能量分配模块120的开断；对外接口140与控制模块130连接；对外接口140设置为与外部电路连接；其中，电池能量分配模块120与对外接口140连接的回路被配置为高压回路10；控制模块130与对外接口140连接的回路被配置为低压回路20；低压回路和高压回路分开设置。
不难理解，柔性复合排210可以作为电源母排，柔性复合排210连接于电源与电池能量分配模块120之间，从而为电池能量分配模块120提供电能，进而将电芯110所存储的电能输送至外界。柔性复合排210的柔性较好，能够在弯折条件下使用，具有良好的抗冲击性能。除此以外，由于电池包的多个部件受限于工艺条件的限制，多个部件间会存在一定的误差。在电池包的生产过程中，多个部件的误差最终会反馈到电池包的装配中，在装配时存在部件误差较大不能装配的风险。因此，在电池包内采用柔性复合排210的连接结构，利用柔性复合排210可弯折使用的特性吸收电池包多个部件的生产误差。
电池能量分配模块120由电池能量分配单元（Battery energy Distribution Unit，BDU）组成，其控制着高压电气回路的上下电过程、预充过程和充电过程。电池能量分配模块120通过柔性复合排210与电芯110直接连接，无需在电芯110中设置输出极固定座。示例性地，柔性复合排210与电芯110间的连接采用螺栓固定。
简单来说，低压回路20设置为将外界通讯信号传输至控制模块130，以及，设置为将控制信号传输至电池能量分配模块120。因此，低压回路20对于信号传输的准确性要求相对较高。
可以理解，在电池包对外放电或充电过程中，高压回路10会产生电流磁效应，在高压回路10周围一定范围内产生一定的磁场。电流磁效应是指任何通有电流的导线都可以在其周围产生磁场的现象。由于高压回路10承担了整车用电器的负载，高压回路10在充放电过程中的电流相对较大，高压回路10的电流磁效应也相对较强。因此，在电池包工作时，高压回路10周围存在较强的电磁干扰。在低压回路20与高压回路10设置位置相对较近时，高压回路10会对低压回路20造成干扰。
参照图1和图2，示例性地，电芯设置于电池包的中心位置，将高压回路10与低压回路20分开设置。高压回路10设置于电池包的第一侧边缘以及电池包的中心位置，低压回路20设置于电池包的四侧边缘。
本申请实施例在电池包中采用柔性复合排的连接结构，使柔性复合排210直接与电芯110连接，无需在电芯110中设置输出极固定座；利用柔性复合排210可弯折使用的特性吸收电池包多个部件的生产误差以及吸收电池包使用过程中的冲击；并且将高压回路10与低压回路20分开设置，减少低压回路20与高压回路10的交叠长度，降低高压回路10对低压回路20的影响。本申请实施例这样的设计架构有利于电池包的装配，提高生产效率，增强电池包的抗冲击性能以及控制可靠性。
在上述实施例的基础上，可选地，结合图2和图3，电池能量分配模块120包括正极电池能量分配单元121和负极电池能量分配单元122，电芯110的正极通过柔性复合排210与正极电池能量分配单元121的电源端连接，电芯110的负极通过柔性复合排210与负极电池能量分配单元122的电源端连接；柔性复合排210包括：电极O态铝排211和软铜排212；电极O态铝排211固定于电芯110的电极上；软铜排212的一端与电极O态铝排211连接；软铜排212的另一端与电池能量分配模块120连接。
不难理解，电池包具有总正极和总负极。电池包的总正极和总负极分别通过柔性复合排210连接至正极电池能量分配单元121和负极电池能量分配单元121。电极O态铝排211固定于电池包的总正极和总负极上，为软铜排212与电芯110的连接提供可靠的连接点。需要说明的是，由于软铜排212的材质较软，电芯110对于软铜排212而言，电芯110可以认为是刚体，而软铜排212可以认为是柔体，在柔体直接于刚体连接时，受限于柔体的材料性能，在实际应用时柔体相较于刚体较为容易磨损。因此，在刚体与柔体的连接中，需要设置额外的连接结构连接刚体和柔体。
参照图3，需要说明的是，正极电池能量分配单元121和负极电池能量分配单元122可以为相同结构，也可以为不同结构，在实际应用时可以根据实际需求进行确定，本实施例对此不做限制。可以理解，不同结构的正极电池能量分配单元121和/或负极电池能量分配单元122对于接口的设置位置不同，这也致使了所需的柔性复合排210的长度不同，因此，在实际应用中，柔性复合排210的长度可以根据实际需求进行确定，本实施例同样对此不做限制。
示例性地，柔性复合排210的电极O态铝排211与电芯110的连接方式可以为螺栓固定连接，电芯110的电极处设有开孔，电极O态铝排211对应于电极开孔处同样设有开孔，螺栓通过电极O态铝排211的开孔和输出模块110电极处的开孔将电极O态铝排211固定于电芯110上；柔性复合排210的电极O态铝排211与电芯110的连接方式也可以是通过卡扣连接，电极O态铝排211和电芯110中均设置有卡扣结构，电极O态铝排211通过卡扣结构固定于电芯110上。
在上述多个实施例的基础上，可选地，结合图1、图2和图3，电芯110设置于电池包的中心区域，高压回路10贯穿于电池包中心区域；低压回路20设置于电池包中心区域的一侧；高压回路10与低压回路20平行设置。
在上述实施例的基础上，可选地，继续参照图2，柔性复合排210还包括：复合排支架213；复合排支架213设置为支撑软铜排212。可以理解，复合排支架213上设置有母排固定套，软铜排212穿过母排固定套与复合排支架213可靠连接。
在上述实施例的基础上，可选地，电芯110间通过柔性集成母排160连接；柔性集成母排160包括：电芯O态铝排161、柔性电路板162和母排支架163。
电芯O态铝排161通过母排支架163固定于电芯110上；柔性电路板160设置于母排支架163的一侧；母排支架163设置为支撑电芯O态铝排161和柔性电路板162。
电芯O态铝排161包括第一铝排、第二铝排和第三铝排。
不难理解，电池包内并列设置多个电芯110，电池包中相邻两个电芯110的电极的极性相反。例如，电芯110的电极均呈上下设置，一个电芯110的位于上面位置的电极为正极，位于下面位置的电极为负极，与该电芯110相邻的电芯的极性与之相反，即，位于上面位置的电极为负极，位于下面位置的电极为正极。在电池包中包括多个这样设置的电芯110，位于上面位置的一排电极为上电极组，位于下面位置的一排电极为下电极组。第一电芯组的上电极组的多个电极通过第一铝排相互连接，第一电芯组的下电极组的多个电极通过第二铝排与第二电芯组的上电极组的多个电极一一对应连接，第二电芯组的下电极组的多个电极通过第三铝排相互连接。即，第一电芯组中的多个电芯和第二电芯组的多个电芯通过电芯O态铝排161串联在一起。柔性电路板设置为采集电芯的温度和电压，并将采集的温度数据和电压数据输出至控制模块130。
在上述实施例的基础上，可选地，继续参照图1和图2，对外接口140包括：快充接口141、放电接口142、慢充接口143和通讯接口144。
快充接口141的正极与正极电池能量分配单元121的快充正极端连接；快充接口141的负极与负极电池能量分配单元122的快充负极端连接；快充接口141的数据端与控制模块130连接；放电接口142的正极与正极电池能量分配单元121的放电正极端连接；放电接口142的负极端与负极电池能量分配单元122的放电负极端连接；放电接口142的数据端与控制模块130连接；慢充接口143的正极端与正极电池能量分配单元121的慢充正极端连接；慢充接口143与负极电池能量分配单元122的慢充负极端连接；慢充接口143的数据端与控制模块130连接；通讯接口144与控制模块130连接。
示例性地，快充接口141的正极与正极电池能量分配单元121的快充正极端间的连接采用20×3mm­ 2的硬质铜排；快充接口141的负极与负极电池能量分配单元122的快充负极端间的连接采用20×3mm­ 2的硬质铜排；放电接口142的正极与正极电池能量分配单元121的放电正极端间的连接采用20×2mm­ 2的硬质铜排；放电接口142的负极端与负极电池能量分配单元122的放电负极端间的连接采用20×3mm­ 2的硬质铜排；电芯110与正极电池能量分配单元121的电源端间的连接采用40×2.5mm­ 2的O态铝（1060O态铝）和20×3mm­ 2的软质铜排组合；电芯110与负极电池能量分配单元122的电源端间的连接采用40×2.5mm­ 2的O态铝（1060O态铝）和20×3mm­ 2的软质铜排组合；慢充接口143的正极端与正极电池能量分配单元121的慢充正极端间的连接采用6mm 2的线缆；慢充接口143与负极电池能量分配单元122的慢充负极端间的连接采用6mm 2的线缆；电芯110间的跨接采用40×2.5mm­ 2的O态铝（1060O态铝）。
继续结合图1和图2，电池包还包括：外壳150，快充接口141和放电接口142位于外壳150的第一侧边缘，慢充接口143和通讯接口144位于外壳150的第二侧边缘；第一侧边缘和第二侧边缘相对设置。
在上述实施例的基础上，可选地，继续参照图1和图2，电池能量分配模块120还包括：正极电流采集单元123和负极电流采集单元124；
正极电流采集单元123串联于正极电池能量分配单元121中；负极电流采集单元124串联于负极电池能量分配单元122中；正极电流采集单元123设置为采集正极电池能量分配单元121的电流；负极电流采集单元124设置为采集负极电池能量分配单元122的电流。
正极电流采集单元123和负极电流采集单元124所在的区域位于快充接口141和放电接口142所在的区域和电芯110所在的区域之间。
高压回路10包括：电芯110连接至电池能量分配模块120的回路、电池能量分配模块120连接至快充接口141，以及，放电接口142和慢充接口143的回路。
在上述实施例的基础上，可选地，继续结合图1和图2，控制模块130包括：主板131和至少一个从板132。
主板131的快充数据端与快充接口141连接；主板131的慢充数据端与慢充接口143连接；主板131的放电数据端与放电接口142连接；主板131的第一通讯端与通讯接口144连接；主板131的第一控制端与正极电池能量分配单元121的控制端连接；主板131的第二控制端与负极电池能量分配单元122的控制端连接；主板131的正极电流采集端与正极电流采集单元123连接；主板131的负极电流采集端与负极电流采集单元124连接；主板131设置为获取充放电数据和对外通讯；从板132的数据采集端与电芯110连接；从板132的通讯端与主板131的第二通讯端连接；从板132设置为获取电芯110的温度和电压。
低压回路20包括：主板131连接至从板132的回路、主板131连接至通讯接口144的回路，以及，从板132连接至电芯110的回路。
在上述实施例的基础上，可选地，继续结合图1和图2，电池包设置有电压温度采集接口111；电压温度采集接口111设置为输出电芯110的电压数据和温度数据；电压温度采集接口111与从板132连接；电压温度采集接口111设置于电芯110的第二侧；其中，电芯110的第二侧为靠近外壳150的第二侧边缘的一侧。不难理解，柔性集成母排160的柔性电路板162通过电压温度采集接口111与从板132连接，柔性电路板162将采集到的电芯110的温度数据和电压数据通过电压温度采集接口111传输至从板132，进而将温度数据和电压数据传输至主板131中。
主板131与电池能量分配模块120设置于外壳150的同一侧；从板132设置于远离主板131的一侧。
可以理解，电池包外壳150的内部空间有限，并且正极电流采集单元123和负极电流采集单元124的电流采集精度受到采集线束长度的影响，在采集线束长度越长时，正极电流采集单元123和负极电流采集单元124的采集精度越差。需要说明的是，采集线束包括正采集线束和负采集线束，主板131连接至正极电流采集单元123的连接线为正采集线束，主板131连接至负极电流采集单元124的连接线为负采集线束。因此，将主板131和电池能量分配模块120设置于同一侧。
图4是本申请实施例提供的一种电动汽车的示意图。参照图4，该电动汽车20包括以上任意实施例提供的电池包10。可以理解，图4中电池包10与车身的相对位置仅作示意，电池包10也可安装于电动汽车20的后部或中部等其他位置，本实施例对此不作限定。

Claims (12)

  1. 一种电池包，包括：
    多个电芯；
    柔性复合排，所述柔性复合排与所述电芯连接；
    电池能量分配模块，所述电池能量分配模块与所述柔性复合排连接；
    控制模块，所述控制模块与所述电池能量分配模块连接；所述控制模块设置为控制所述电池能量分配模块的开断；
    对外接口，所述对外接口与所述控制模块连接；所述对外接口设置为与外部电路连接；
    其中，所述电池能量分配模块与所述对外接口连接的回路被配置为高压回路；所述控制模块与所述对外接口连接的回路被配置为低压回路；所述低压回路和所述高压回路分开设置。
  2. 根据权利要求1所述的电池包，其中，所述柔性复合排包括：电极O态铝排和软铜排；
    所述电极O态铝排固定于所述多个电芯的电极上；所述软铜排的一端与所述电极O态铝排连接；所述软铜排的另一端与所述电池能量分配模块连接。
  3. 根据权利要求1所述的电池包，其中，所述电芯设置于所述电池包的中心区域，所述高压回路贯穿于所述电池包的中心区域；所述低压回路设置于所述电池包中心区域的一侧；所述高压回路与所述低压回路平行设置。
  4. 根据权利要求2所述的电池包，其中，所述柔性复合排还包括：复合排支架；所述复合排支架设置为支撑所述软铜排。
  5. 根据权利要求1-4任一项所述的电池包，其中，所述电芯间通过柔性集成母排连接；所述柔性集成母排包括：电芯O态铝排、柔性电路板和母排支架；
    所述电芯O态铝排通过所述母排支架固定于所述电芯上；所述柔性电路板设置于所述母排支架的一侧；所述母排支架设置为支撑所述电芯O态铝排和所述柔性电路板。
  6. 根据权利要求1所述的电池包，其中，所述电池能量分配模块包括正极电池能量分配单元和负极电池能量分配单元；
    所述电芯的正极通过所述柔性复合排与所述正极电池能量分配单元的电源端连接，所述电芯的负极通过所述柔性复合排与所述负极电池能量分配单元的电源端连接。
  7. 根据权利要求1所述的电池包，其中，所述对外接口包括：快充接口、放电接口、慢充接口和通讯接口；
    所述快充接口的正极与所述正极电池能量分配单元的快充正极端连接；所述快充接口的负极与所述负极电池能量分配单元的快充负极端连接；所述快充接口的数据端与所述控制模块连接；所述放电接口的正极与所述正极电池能量分配单元的放电正极端连接；所述放电接口的负极端与所述负极电池能量分配单元的放电负极端连接；所述放电接口的数据端与所述控制模块连接；所述慢充接口的正极端与所述正极电池能量分配单元的慢充正极端连接；所述慢充接口与所述负极电池能量分配单元的慢充负极端连接；所述慢充接口的数据端与所述控制模块连接；所述通讯接口与所述控制模块连接；
    所述电池包还包括：外壳，所述快充接口和所述放电接口位于所述外壳的第一侧边缘，所述慢充接口和通讯接口位于所述外壳的第二侧边缘；所述第一侧边缘和所述第二侧边缘相对设置。
  8. 根据权利要求7所述的电池包，其中，所述电池能量分配模块还包括：正极电流采集单元和负极电流采集单元；
    所述正极电流采集单元串联于所述正极电池能量分配单元中；所述负极电流采集单元串联于所述负极电池能量分配单元中；所述正极电流采集单元设置为采集所述正极电池能量分配单元的电流；所述负极电流采集单元设置为采集所述负极电池能量分配单元的电流；
    所述正极电流采集单元和所述负极电流采集单元所在的区域位于所述快充接口和所述放电接口所在的区域和所述电芯所在的区域之间；
    所述高压回路包括：所述电芯连接至所述电池能量分配模块的回路、所述电池能量分配模块连接至所述快充接口，以及，所述放电接口和所述慢充接口的回路。
  9. 根据权利要求7所述的电池包，其中，所述控制模块包括：主板和至少一个从板；
    所述主板的快充数据端与所述快充接口连接；所述主板的慢充数据端与所述慢充接口连接；所述主板的放电数据端与所述放电接口连接；所述主板的第一通讯端与所述通讯接口连接；所述主板的第一控制端与所述正极电池能量分配单元的控制端连接；所述主板的第二控制端与所述负极电池能量分配单元的控制端连接；所述主板的正极电流采集端与正极电流采集单元连接；所述主板的负极电流采集端与负极电流采集单元连接；所述主板设置为获取充放电数据和对外通讯；
    所述从板的数据采集端与所述电芯连接；所述从板的通讯端与所述主板的第二通讯端连接；所述从板设置为获取所述电芯的温度和电压；
    所述低压回路包括：所述主板连接至所述从板的回路、所述主板连接至所述通讯接口的回路，以及，所述从板连接至所述电芯的回路。
  10. 根据权利要求9所述的电池包，其中，所述电池包设置有电压温度采集接口；所述电压温度采集接口设置为输出所述电芯的电压数据和温度数据；所述电压温度采集接口与所述从板连接；
    所述电压温度采集接口设置于所述电芯的第二侧；其中，所述电芯的第二侧为靠近外壳的第二侧边缘的一侧。
  11. 根据权利要求9所述的电池包，其中，所述主板与所述电池能量分配模块设置于所述外壳的同一侧；所述从板设置于远离所述主板的一侧。
  12. 一种电动汽车，包括如权利要求1-11任一项所述的电池包。
PCT/CN2024/078915 2023-08-01 2024-02-28 电池包及电动汽车 Pending WO2024149406A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP24741400.6A EP4518004A4 (en) 2023-08-01 2024-02-28 BATTERY PACK AND ELECTRIC VEHICLE
DE212024000038.8U DE212024000038U1 (de) 2023-08-01 2024-02-28 Batteriepack und Elektrofahrzeug
US18/961,315 US20250087768A1 (en) 2023-08-01 2024-11-26 Battery pack and electric vehicle

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202310958343.8 2023-08-01
CN202322046999.0U CN220895779U (zh) 2023-08-01 2023-08-01 一种电池包及电动汽车
CN202310958343.8A CN116995367A (zh) 2023-08-01 2023-08-01 一种电池包及电动汽车
CN202322046999.0 2023-08-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/961,315 Continuation US20250087768A1 (en) 2023-08-01 2024-11-26 Battery pack and electric vehicle

Publications (1)

Publication Number Publication Date
WO2024149406A1 true WO2024149406A1 (zh) 2024-07-18

Family

ID=91897748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/078915 Pending WO2024149406A1 (zh) 2023-08-01 2024-02-28 电池包及电动汽车

Country Status (4)

Country Link
US (1) US20250087768A1 (zh)
EP (1) EP4518004A4 (zh)
DE (1) DE212024000038U1 (zh)
WO (1) WO2024149406A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4734220A1 (en) * 2024-10-28 2026-04-29 Eve Energy Co., Ltd. Battery pack and vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017143748A1 (zh) * 2016-02-25 2017-08-31 比亚迪股份有限公司 动力电池及其保护系统和电动汽车
CN111430589A (zh) * 2019-01-09 2020-07-17 东风小康汽车有限公司重庆分公司 一种电池包总成
CN217062368U (zh) * 2021-12-08 2022-07-26 北京车和家汽车科技有限公司 电池包bdu结构、电池包及车辆
CN115588809A (zh) * 2022-10-28 2023-01-10 南京创源天地动力科技有限公司 一种轻量化集成式插电式混合动力电池结构系统
CN218896908U (zh) * 2023-01-06 2023-04-21 楚能新能源股份有限公司 一种软连接铜排结构
CN116995367A (zh) * 2023-08-01 2023-11-03 惠州亿纬锂能股份有限公司 一种电池包及电动汽车

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9520587B2 (en) * 2014-09-30 2016-12-13 Johnson Controls Technology Company Bus bar assembly carrier
DE102015002061B4 (de) * 2015-02-18 2023-11-16 Audi Ag Elektrische Stromschiene mit Sensoreinheit
CN111430650B (zh) * 2019-11-22 2022-02-25 蜂巢能源科技有限公司 电池包和车辆
CN212313325U (zh) * 2020-06-08 2021-01-08 东风汽车股份有限公司 一种纯电动轻型卡车动力电池系统控制装置
CN115602936A (zh) * 2021-06-28 2023-01-13 威马智慧出行科技（上海）股份有限公司（Cn） 电池包和车辆
CN216213928U (zh) * 2021-11-04 2022-04-05 合肥正瑞储能科技有限公司 一种便于安装维护的储能电池簇

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017143748A1 (zh) * 2016-02-25 2017-08-31 比亚迪股份有限公司 动力电池及其保护系统和电动汽车
CN111430589A (zh) * 2019-01-09 2020-07-17 东风小康汽车有限公司重庆分公司 一种电池包总成
CN217062368U (zh) * 2021-12-08 2022-07-26 北京车和家汽车科技有限公司 电池包bdu结构、电池包及车辆
CN115588809A (zh) * 2022-10-28 2023-01-10 南京创源天地动力科技有限公司 一种轻量化集成式插电式混合动力电池结构系统
CN218896908U (zh) * 2023-01-06 2023-04-21 楚能新能源股份有限公司 一种软连接铜排结构
CN116995367A (zh) * 2023-08-01 2023-11-03 惠州亿纬锂能股份有限公司 一种电池包及电动汽车

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4518004A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4734220A1 (en) * 2024-10-28 2026-04-29 Eve Energy Co., Ltd. Battery pack and vehicle

Also Published As

Publication number Publication date
US20250087768A1 (en) 2025-03-13
EP4518004A4 (en) 2025-10-15
EP4518004A1 (en) 2025-03-05
DE212024000038U1 (de) 2024-11-25

Similar Documents

Publication Publication Date Title
CN111430650A (zh) 电池包和车辆
CN111082493B (zh) 终端设备
CN106058112A (zh) 一种圆柱型电池模组
WO2012033313A2 (ko) 고출력 대용량의 전지팩
CN116995367A (zh) 一种电池包及电动汽车
WO2024149406A1 (zh) 电池包及电动汽车
WO2023143013A1 (zh) 采样装置、电池及用电设备
CN104300644A (zh) 一种多回路充电方法及系统
CN102456914A (zh) 一种适用于动力电车用的锂离子电池组系统
CN220895779U (zh) 一种电池包及电动汽车
CN216213928U (zh) 一种便于安装维护的储能电池簇
CN112259865B (zh) 电池模组
CN221201474U (zh) 电池和用电装置
CN212230469U (zh) 一种应用于电动轮椅的软包动力锂离子电池
CN209329074U (zh) 一种蓄电池模组
CN221150116U (zh) 采样装置、电池管理系统及电池包
CN215042206U (zh) 一种储能包、车辆充电设备及充电场站
CN202084602U (zh) 一种适用于动力电车用的锂离子电池组系统
CN202084764U (zh) 一种电子元器件并联连接线
CN214755570U (zh) 一种锂电池并联充放电系统
CN212810481U (zh) 一种铅酸蓄电池的汇流排
CN212517294U (zh) 电池模组及电池包
CN209217089U (zh) 一种串并联可切换的电池组
CN213210272U (zh) 一种电芯模组双层fpc的采样结构及电池模组
CN204539047U (zh) 一种基于移动互联网的分布式光伏供电装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24741400

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 212024000038

Country of ref document: DE

WWE Wipo information: entry into national phase

Ref document number: 2024741400

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2024741400

Country of ref document: EP

Effective date: 20241129