WO2024055508A1 - 电芯模块和电池包 - Google Patents

电芯模块和电池包 Download PDF

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Publication number
WO2024055508A1
WO2024055508A1 PCT/CN2023/076522 CN2023076522W WO2024055508A1 WO 2024055508 A1 WO2024055508 A1 WO 2024055508A1 CN 2023076522 W CN2023076522 W CN 2023076522W WO 2024055508 A1 WO2024055508 A1 WO 2024055508A1
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WO
WIPO (PCT)
Prior art keywords
battery
plate
integrated
section
battery cell
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.)
Ceased
Application number
PCT/CN2023/076522
Other languages
English (en)
French (fr)
Inventor
高灵雷
董泽永
董少锁
程姗
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.)
Hefei Gotion High Tech Power Energy Co Ltd
Original Assignee
Hefei Gotion High Tech Power 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
Application filed by Hefei Gotion High Tech Power Energy Co Ltd filed Critical Hefei Gotion High Tech Power Energy Co Ltd
Priority to DE212023000329.5U priority Critical patent/DE212023000329U1/de
Priority to ES202590004U priority patent/ES1318281Y/es
Publication of WO2024055508A1 publication Critical patent/WO2024055508A1/zh
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • 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 technical field of lithium-ion batteries, and specifically to a cell module and a battery pack.
  • Lithium-ion batteries have developed rapidly since the 1990s and have become one of the essential energy storage devices in modern society. In recent years, with the development of electric vehicles, people's thinking about electric vehicles has changed dramatically. The electric vehicle industry has become popular, and the application of lithium electronic batteries has become more widespread.
  • Lithium electronic batteries generally use soft-pack battery modules.
  • the soft-pack battery module structure generally includes battery packs, plastic brackets, bus bars, sampling wire harnesses and casings.
  • a busbar is used to connect multiple batteries in parallel, and then multiple parallel battery packs are connected in series through the busbar.
  • the energy ratio of the battery module needs to be improved.
  • the mainstream integration solution uses cells to be grouped into modules, and a certain number of modules to be integrated into battery packs.
  • the integration level of existing cell modules is not high enough, resulting in restricted cruising range.
  • the main purpose of this application is to provide a battery cell module and battery pack that can solve the problem that the battery cruising range is restricted due to insufficient integration of the battery cell module using the existing battery cell grouping method.
  • a battery cell module including: a connection structure; at least one battery unit, each battery unit includes at least two battery cell groups, and each battery cell in the same battery unit The core groups are arranged sequentially along the first direction, and two adjacent battery groups are electrically connected through a connection structure. Each battery group includes two cells connected along the length extension direction of the battery unit.
  • each battery core group has a tab connection area at the connecting end of the two battery cores.
  • the connection structure includes a connecting piece. One end of the connecting piece is connected to a tab connection area in the two adjacent battery core groups. The other end of the connecting piece is connected to the other tab connecting area in two adjacent battery core groups.
  • the connection structure also includes a mounting bracket.
  • the mounting bracket includes a base and a clamping plate.
  • the clamping plate is installed on the base.
  • the base is located in the gap.
  • the outer surface of the base is A first slot is provided on the wall, a second slot is provided on the card board, and the connecting piece is inserted into the first slot after passing through the second slot.
  • the clamping plate includes a U-shaped plate and two overlapping plates.
  • the U-shaped plate includes a base plate and two side plates arranged on both sides of the base plate.
  • One of the two overlapping plates is connected to one of the side plates, and the two overlapping plates are connected to one of the side plates.
  • the other of the two overlapping plates is connected to the other side plate, and both overlapping plates extend laterally from the open end of the U-shaped plate to the outside of the U-shaped plate.
  • two second slots are spaced apart on the bottom plate
  • the connecting piece includes a first plate section, a second plate section and a third plate section connected in sequence, the second plate section is bent relative to the first plate section, and the third plate section is bent relative to the first plate section.
  • the three plate sections are bent relative to the second plate section, the first plate section penetrates from one of the two second slots, and the third plate section penetrates from the other of the two second slots.
  • the battery module also includes an installation shell, and each battery unit is installed in an installation shell.
  • the installation shell includes an installation cavity and an installation opening connected with the installation cavity.
  • the installation opening includes a first installation opening and a second installation opening. and a third installation opening, the battery unit can be installed into the installation cavity through the first installation opening, the second installation opening is located at one end of the installation shell, and the third installation opening is located at the other end of the installation shell.
  • the battery unit further includes a plurality of connection brackets, a connection bracket is provided at the second installation opening and the third installation opening, and the tabs of the battery core group away from the tab connection area are connected to the connection brackets.
  • connection bracket includes a first bus piece, and the tabs of the battery core group away from the tab connection area are connected to the first bus piece.
  • the battery module also includes two integrated trays, one of the two integrated trays is installed on the battery At one end of the core module, the other of the two integrated trays is installed at the other end of the battery module. Both integrated trays include a plurality of second bus parts, and each second bus part is consistent with the first bus part on its side. One corresponding connection.
  • the installation shell includes a first connecting plate, a second connecting plate and a third connecting plate connected in sequence, the second connecting plate is bent relative to the first connecting plate, and the third connecting plate is bent relative to the second connecting plate, A groove is provided at the corresponding position of the first connecting plate and the third connecting plate, and the connecting structure is clamped on the two grooves.
  • the battery module further includes a plurality of spacers, and one spacer is provided between two adjacent installation shells.
  • the battery module also includes a first low-voltage sampling component, and the connecting pieces of each battery unit are electrically connected to the first low-voltage sampling component.
  • the first low-voltage sampling component includes a first circuit integrated board, a first collection piece and a plurality of nickel sheets.
  • the first circuit integrated board includes a first integrated board section and a second integrated board section.
  • the first integrated board section and the third integrated board section One end of the two integrated plate sections is connected through the first collecting piece, the first integrated plate section and the second integrated plate section are spaced apart, and the sides of the first integrated plate section and the second integrated plate section that are close to each other are staggered along the length direction.
  • a plurality of nickel plates are provided, and the nickel plates are spaced apart along the arrangement direction.
  • the connecting plates of each battery unit are connected to each nickel plate in a one-to-one correspondence.
  • the battery module also includes two second low-voltage sampling components.
  • a second low-voltage sampling component is provided on the two integrated trays.
  • Each second low-voltage sampling component includes a second collection piece and a second circuit integration board. and multiple nickels.
  • a battery pack including: the above-mentioned battery cell module; a box body, each battery cell module is installed in the box body; a plurality of liquid cooling plates, the plurality of liquid cooling plates are arranged on each battery cell top of the core module.
  • each battery unit includes at least two battery cell groups.
  • Each battery cell group includes two battery cells connected along the length extension direction of the battery unit. Two adjacent cells Cell groups are connected through The structure is electrically connected, so that one battery unit contains two rows of battery cells arranged along the first direction, and the two rows of battery cells can be electrically connected through the connecting structure.
  • the battery module of the above technical solution has a higher degree of integration. The energy density of a single battery module is greater, which can greatly improve the battery. At the same time, due to the high degree of integration, it can also improve assembly efficiency, save assembly time and assembly costs.
  • Figure 1 shows a schematic diagram of the overall structure of the battery module according to the embodiment of the present application
  • Figure 2 shows a schematic diagram of the overall structure of a battery unit according to an embodiment of the present application
  • Figure 3 shows a schematic diagram of the overall structure of the connection structure according to the embodiment of the present application.
  • Figure 4 shows a schematic diagram of the overall structure of the connecting piece according to the embodiment of the present application.
  • Figure 5 shows a schematic diagram of the overall structure of the first low-voltage sampling component according to the embodiment of the present application
  • Figure 6 shows a schematic diagram of the overall structure of the second low-pressure sampling component according to the embodiment of the present application.
  • Figure 7 shows a schematic structural diagram of an integrated tray according to an embodiment of the present application.
  • Figure 8 shows a schematic diagram of the overall structure of the temperature collecting member according to the embodiment of the present application.
  • Figure 9 shows a schematic diagram of the voltage and temperature collection structure at the middle position of the battery module according to the embodiment of the present application.
  • FIG. 10 shows an exploded view of the battery pack according to the embodiment of the present application.
  • connection structure 11. Connecting piece; 111. First plate section; 112. Second plate section; 113. Third plate section; 12. Installation bracket; 13. Base; 131. First slot; 14. Card board; 141. Second slot; 142. U-shaped plate; 1421. Bottom plate; 1422. Side plate; 143. Overlap plate; 20. Battery unit; 21. Cell group; 22. Luggage connection area; 23. Connecting bracket; 231. First manifold; 30. Installation shell; 31. Installation cavity; 32. First installation opening; 33. Second installation opening; 34. Third installation opening; 35. First connection plate; 351. Groove; 36. Second connecting plate; 37. Third connecting plate; 40. Integrated tray; 41.
  • Second manifold 50. Liquid cooling plate; 60. Spacer; 70. First low-pressure sampling component; 71. The first line integrated board; 711, the first integrated board section; 712, the second integrated board section; 72, the first collection piece; 80, nickel sheet; 90, the second low-voltage sampling component; 91, the second collection piece; 92 , The second circuit integrated board; 93. Insulating cover; 94. Temperature collection piece; 95. Leading pole piece; 100. Box body; 101. Box cover; 102. Lower box body; 103. Thermal conductive structural glue.
  • the present application provides a battery cell module, including: a connection structure 10 ; at least one battery unit 20 , each battery unit 20 including at least two battery packs 21 , and the same battery unit
  • Each battery core group 21 in 20 is arranged sequentially along the first direction, and two adjacent battery core groups 21 are electrically connected through a connection structure 10 .
  • Each battery core group 21 includes two battery cells 20 along the battery unit 20 . Cells connected along the length extension direction.
  • each battery unit 20 includes at least two battery core groups 21 , and each battery unit 21 includes two battery cells connected along the length extension direction of the battery unit 20 . In series, two adjacent battery cell groups 21 are electrically connected through the connection structure 10. In this way, one battery unit 20 contains two rows of battery cells arranged along the first direction, and the two rows of battery cells are connected by Structure 10 enables electrical connection.
  • the battery cell module includes only one battery unit 20, the battery cell module has two rows of battery cells arranged along the first direction.
  • the battery cell module includes multiple battery units 20, the multiple battery units 20 are arranged in sequence along the first direction. arranged and fixedly connected together. At this time, the battery module also has two rows of battery cells arranged along the first direction, which can increase the energy density of a single battery module.
  • the battery module of the above technical solution has a higher degree of integration, and a single battery module has a greater energy density, which can greatly increase the battery's cruising range.
  • the higher degree of integration it can also improve assembly efficiency. , saving assembly time and assembly costs.
  • each cell group 21 has a tab connection area 22 at the connection end of two cells
  • the connection structure 10 includes a connecting piece 11 .
  • the connecting piece 11 One end of the connecting piece 11 is connected to one tab connection area 22 of the two adjacent battery core groups 21, and the other end of the connecting piece 11 is connected to the other tab connection area 22 of the two adjacent battery core groups 21.
  • one end of the connecting piece 11 is connected to one tab connecting area 22 of two adjacent battery core groups 21 , and the other end of the connecting piece 11 is connected to the other one of the two adjacent battery core groups 21 .
  • the tab connection areas 22 are connected, so that parallel connection between two adjacent battery core groups 21 can be achieved.
  • the tabs of the two cells in the tab connection area 22 are directly connected, and no other connection structures or connectors are needed. The structure is relatively simple, so the number of parts can be reduced. cut costs.
  • the connection structure 10 also includes a mounting bracket 12 .
  • the mounting bracket 12 includes The base 13 and the card plate 14, the card plate 14 is installed on the base 13, the base 13 is located in the gap, the outer wall of the base 13 is provided with a first slot 131, the card plate 14 is provided with a second slot 141, and the connecting piece 11 passes through the second slot 141 and is then stuck in the first slot 131 .
  • the base 13 is located in the gap, and the connecting piece 11 passes through the second slot 141 on the card plate 14 and is then clamped.
  • the base 13 can not only provide an installation position for the connecting piece 11, but also support and limit both sides of the connecting piece 11 to ensure the structural stability of the battery unit 20. .
  • the clamping plate 14 includes a U-shaped plate 142 and two overlapping plates 143 .
  • the U-shaped plate 142 includes a bottom plate 1421 and two plates arranged on both sides of the bottom plate 1421 .
  • Two side plates 1422, one of the two overlapping plates 143 is connected to one of the side plates 1422, and the other of the two overlapping plates 143 is connected to the other side plate 1422.
  • the installation shell 30 includes a first connecting plate 35, a second connecting plate 36 and a third connecting plate 35 connected in sequence.
  • the connecting plate 37 and the second connecting plate 36 are bent relative to the first connecting plate 35 and the third connecting plate 37 is bent relative to the second connecting plate 36.
  • the corresponding positions of the first connecting plate 35 and the third connecting plate 37 are evenly spaced.
  • One groove 351 is provided, and the connecting structure 10 is clamped on two grooves 351 .
  • the two overlapping plates 143 are respectively connected to the two side plates 1422 of the U-shaped plate 142 and extend laterally toward the outside of the U-shaped plate 142. At this time, the two overlapping plates 143 are connected to the two side plates 1422 of the U-shaped plate 142. Both ends of the profile plate 142 can form an L-shaped clamping structure.
  • the mounting bracket 12 can be clamped on the two grooves 351 through the L-shaped clamping structure. At this time, the mounting bracket 12 is fixedly installed on the mounting shell 30. The mounting bracket 12 is in a stable state, so that the connecting piece 11 clamped on the mounting bracket 12 remains stable, thereby ensuring a more stable connection between two adjacent battery core groups 21 .
  • two second slots 141 are spaced apart on the bottom plate 1421 , and the connecting piece 11 includes a first plate section 111 and a second plate section 112 connected in sequence. and a third plate section 113.
  • the second plate section 112 is bent relative to the first plate section 111.
  • the third plate section 113 is bent relative to the second plate section 112.
  • the first plate section 111 is bent from the two second slots 141 One of the two second slots 141 passes through, and the third plate section 113 passes through the other of the two second slots 141 .
  • the second plate section 112 is bent relative to the first plate section 111
  • the third plate section 113 is bent relative to the second plate section 112 , that is, the connecting piece 11 has a U-shaped structure, and the first plate section 111
  • the third plate section 113 is inserted from one of the two second slots 141
  • the third plate section 113 is inserted from the other of the two second slots 141 .
  • the connecting piece 11 is stuck on the outer wall of the base 13
  • the first plate section 111 and the third plate section 113 are respectively located in the second slot 141 on the outer wall of the base 13.
  • the connecting piece 11 is installed on the mounting bracket 12 by snapping, which not only facilitates installation and disassembly, but also saves installation time. space, and when the connecting piece 11 or the mounting bracket 12 is damaged, it can be easily replaced, and only the damaged connecting piece 11 or the mounting bracket 12 needs to be replaced, without the need for overall replacement, which can save costs.
  • the battery module further includes a mounting shell 30 , and each battery unit 20 is installed in a mounting shell 30 .
  • the mounting shell 30 includes a mounting cavity 31 and a The installation cavity 31 is connected with an installation opening.
  • the installation opening includes a first installation opening 32, a second installation opening 33 and a third installation opening 34.
  • the battery unit 20 can be installed into the installation cavity 31 through the first installation opening 32.
  • the opening 33 is located at one end of the installation shell 30, and the third installation opening 34 is located at the other end of the installation shell 30;
  • the battery unit 20 also includes a plurality of connection brackets 23, and a connection is provided at each of the second installation opening 33 and the third installation opening 34.
  • the bracket 23 , the tabs of the cell group 21 away from the tab connection area 22 are connected to the connecting bracket 23 .
  • each battery unit 20 of the battery module is installed in an installation shell 30.
  • the battery unit 20 is installed into the installation cavity 31 of the installation shell 30 from the first installation opening 32, it is then installed in the second installation opening.
  • 33 and the third installation opening 34 are respectively installed with a connecting bracket 23, and then the tabs of the battery core group 21 away from the tab connection area 22 are welded to the connecting bracket 23 to realize the connection between two adjacent battery core groups 21. in parallel.
  • the installation shell 30 has multiple installation openings to facilitate the installation and replacement of the battery unit 20 and the connection bracket 23 .
  • a spacer 60 is provided between two adjacent battery core groups 21 installed in the same installation shell 30 .
  • the connection bracket 23 includes a first bus piece 231 , and the tabs of the cell group 21 away from the tab connection area 22 are connected to the first bus piece 231 .
  • the battery module also includes two integrated trays 40. One of the two integrated trays 40 is installed at one end of the battery module, and the other of the two integrated trays 40 is installed at the other end of the battery module.
  • the two integrated trays 40 Each includes a plurality of second busbars 41 , and each second busbar 41 is connected to the first busbar 231 on its side in a one-to-one correspondence.
  • a first bus piece 231 is provided on the connecting bracket 23.
  • the tabs of the battery pack 21 away from the tab connection area 22 are laser welded to the first bus piece 231.
  • the two integrated trays 40 are respectively installed on At both ends of the battery cell module, a plurality of second busbars 41 are provided on the integrated tray 40.
  • the plurality of second busbars 41 on the integrated tray 40 and each connecting bracket 23 The first bus parts 231 on the circuit board correspond one to one, and the second bus parts 41 and the first bus parts 231 are laser welded together.
  • the first bus part 231 and the second bus part 41 may be bus aluminum sheets.
  • the battery module also includes an insulating cover 93.
  • An insulating cover 93 is installed on each of the two integrated trays 40.
  • the insulating cover 93 plays the role of insulation protection.
  • the battery module further includes a plurality of spacers 60 , and one spacer 60 is provided between two adjacent installation shells 30 .
  • the battery module includes a plurality of battery units 20, and each battery unit 20 is installed in a mounting shell 30.
  • a spacer 60 is disposed between two adjacent mounting shells 30.
  • the two installation shells 30 are respectively bonded to both sides of the separator 60 and are fixedly connected together through the separator 60 to realize the connection of two adjacent battery units 20 .
  • the battery module includes a plurality of battery units 20 , and all the battery units 20 are installed in a mounting shell 30 , and two adjacent battery packs 21 are respectively bonded to the spacers 60 Both sides are fixedly connected together through spacers 60 .
  • the battery module further includes a first low-voltage sampling component 70 , and the connecting piece 11 of each battery unit 20 is electrically connected to the first low-voltage sampling component 70 .
  • the first low-voltage sampling component 70 collects the voltage value of each battery cell group 21, which facilitates the staff to grasp the working status of the battery module and detect abnormal conditions in a timely manner.
  • the first low-voltage sampling component 70 includes a first circuit integrated board 71 , a first collection piece 72 and a plurality of nickel sheets 80 .
  • the first circuit integrated board 71 It includes a first integrated board section 711 and a second integrated board section 712. One ends of the first integrated board section 711 and the second integrated board section 712 are connected through the first collection piece 72.
  • the first integrated board section 711 and the second integrated board The segments 712 are spaced apart.
  • a plurality of nickel sheets 80 are staggered along the length direction on the sides of the first integrated plate segment 711 and the second integrated plate segment 712 close to each other, and the nickel sheets 80 are spaced apart along the arrangement direction.
  • the connecting piece 11 of each battery unit 20 is connected to each nickel piece 80 in a one-to-one correspondence.
  • first integrated board section 711 and the second integrated board section 712 are connected through the first collecting part 72, that is, one end of the first collecting part 72 is connected to the first integrated board section 711, and the first The other end of the collecting piece 72 is connected to the second integrated plate section 712.
  • the first collecting piece 72 can be disposed at one end of the first integrated plate section 711 and the second integrated plate section 712, It can also be provided in the middle of the first integrated plate section 711 and the second integrated plate section 712 .
  • the first integrated plate section 711 and the second integrated plate section 712 are spaced apart, and the distance between them is greater than the length of the nickel sheet 80 to ensure the installation space of the nickel sheet 80 .
  • a plurality of nickel sheets 80 are staggered along the length direction on the sides of the first integrated plate section 711 and the second integrated plate section 712 , and are spaced apart along the arrangement direction. Two adjacent nickel sheets 80 are arranged alternately along the length direction. The spacing distance between the nickel plates 80 should match the distance between the connecting pieces 11 of two adjacent battery core groups 21 to ensure that after the first low-voltage sampling assembly 70 is installed, the position of each nickel piece 80 is in line with the position of each connecting piece 11 The locations correspond one-to-one to ensure the accuracy and comprehensiveness of the collected data.
  • the battery module also includes two second low-voltage sampling components 90 , and one second low-voltage sampling component 90 is provided on each of the two integrated trays 40 .
  • Each second low-voltage sampling assembly 90 includes a second collection part 91 , a second circuit integrated board 92 and a plurality of nickel sheets 80 .
  • the second low-voltage sampling component 90 is installed on the integrated tray 40, and the second collection part 91 is used to collect the voltage value of the battery module at a position far away from the tab connection area 22 to facilitate real-time detection of the operation of the battery module. state.
  • the first collecting part 72 and the second collecting part 91 may be plug connectors.
  • the battery module also includes a temperature collecting part 94. After the temperature collecting part 94 passes through and is bent to fit on the second circuit integrated board 92, the temperature collecting part 94 is fixedly installed on the second low-voltage sampling component 90 by welding. . After the temperature collecting part 94 passes through and is bent to fit on the first circuit integrated board 71 , the temperature collecting part 94 is fixedly installed on the first low-voltage sampling assembly 70 by welding.
  • the number and placement of the temperature collecting parts 94 can be reasonably set according to thermal management requirements, and the temperature collecting parts 94 need to be bonded between two adjacent battery units 20 .
  • the integrated tray 40 is also provided with an extraction pole piece 95 .
  • current flows in from one lead-out pole piece 95 , passes through the second bus 41 , flows through each battery unit 20 in sequence, and finally flows out from the other lead-out pole piece 95 .
  • the number of battery units 20 is an even number
  • two lead-out pole pieces 95 are provided, and the two lead-out pole pieces 95 are located on the same side of the battery module.
  • two lead-out poles are provided. piece 95. At this time, the two lead-out pole pieces 95 are located on opposite sides of the battery module.
  • a battery pack including: the above-mentioned battery cell module; a box 100 in which each battery module is installed; and a plurality of liquid cooling plates 50 , a plurality of liquid cooling plates 50 are arranged on the top of each battery module.
  • the box 100 includes a box cover 101 and a lower box 102 .
  • Multiple battery modules are fixedly installed in the lower box 102 through thermally conductive structural adhesive 103 .
  • Multiple liquid cooling plates 50 are bonded through thermally conductive structural adhesive 103
  • the box cover 101 and the lower box 102 are detachably connected together through bolts.
  • each battery unit includes at least two cell groups, and each battery group includes two Two battery cells are connected along the length direction of the battery unit, and two adjacent battery cell groups are electrically connected through a connecting structure.
  • one battery unit contains two rows of battery cells arranged along the first direction, and The electrical connection between the two rows of battery cells can be realized through the connection structure.
  • the above arrangement can increase the energy density of a single battery cell module.
  • the battery cell module of the above technical solution With a higher degree of integration, a single cell module has a greater energy density, which can greatly increase the battery's cruising range. At the same time, the higher degree of integration can also improve assembly efficiency, save assembly time and assembly costs.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Hybrid Cells (AREA)

Abstract

本申请提供了一种电芯模块和电池包。该电芯模块包括：连接结构；至少一个电池单元，每个电池单元包括至少两个电芯组，同一电池单元中的各电芯组沿第一方向依次排布，且相邻两个电芯组之间通过一个连接结构电连接，每个电芯组均包括两个沿电池单元的长度延伸方向连接的电芯。本申请的技术方案的电芯模块，能够解决采用现有电芯成组方式的电芯模组集成度不够高，导致电池续航里程受到制约的问题。

Description

电芯模块和电池包
本申请要求申请日为2022年09月14日，申请号为202211116836.9，发明名称为“电芯模块和电池包”的专利申请的优先权。
技术领域
本申请涉及锂离子电池技术领域，具体而言，涉及一种电芯模块和电池包。
背景技术
锂离子电池自上世纪90年代以来发展迅速，已经成为现代社会必不可少的储能设备之一。近年来，随着电动汽车的发展，人们对电动汽车的思想转变巨大，电动汽车行业开始火热起来，锂电子电池的应用也随之变得更加广泛。
锂电子电池一般采用软包电池模组，软包电池模组结构一般包括电池组、塑料支架、汇流排、采样线束和外壳。在电池模组中，使用汇流排实现多个电池的并联，然后将多个并联的电池组通过汇流排进行串联。同时，为了使电池模组的结构更加轻量化，需要提高电池模组的能量比。目前主流集成方案采用电芯成组为模组，一定数量的模组集成为电池包，但是，现有电芯模组的集成度不够高，导致续航里程受到制约。
申请内容
本申请的主要目的在于提供一种电芯模块和电池包，能够解决采用现有电芯成组方式的电芯模组集成度不够高，导致电池续航里程受到制约的问题。
为了实现上述目的，根据本申请的一方面，提供了一种电芯模块，包括：连接结构；至少一个电池单元，每个电池单元均包括至少两个电芯组，同一电池单元中的各电芯组沿第一方向依次排布，且相邻两个电芯组之间通过一个连接结构电连接，每个电芯组均包括两个沿电池单元的长度延伸方向连接的电芯。
进一步地，每个电芯组在两个电芯的连接端具有极耳连接区，连接结构包括连接片，连接片的一端与相邻两个电芯组中的一个极耳连接区相连接，连接片的另一端与相邻两个电芯组中的另一个极耳连接区相连接。
进一步地，相邻两个电芯组的极耳连接区之间具有间隙，连接结构还包括安装支架，安装支架包括底座和卡板，卡板安装在底座上，底座位于间隙内，底座的外壁面上设置有第一插槽，卡板上设置有第二插槽，连接片穿过第二插槽后卡设在第一插槽内。
进一步地，卡板包括U型板和两个搭接板，U型板包括一个底板和设置在底板两侧的两个侧板，两个搭接板中的一个与其中一个侧板连接，两个搭接板中的另一个与另一个侧板连接，且两个搭接板均从U型板的开口端向U型板的外侧侧向延伸。
进一步地，两个第二插槽间隔设置在底板上，连接片包括依次连接的第一板段、第二板段和第三板段，第二板段相对于第一板段折弯，第三板段相对于第二板段折弯，第一板段从两个第二插槽中的一个穿入，第三板段从两个第二插槽中的另一个穿入。
进一步地，电芯模块还包括安装壳，每个电池单元均安装在一个安装壳内，安装壳包括安装腔和与安装腔相连通的安装开口，安装开口包括第一安装开口、第二安装开口和第三安装开口，电池单元可通过第一安装开口装入安装腔内，第二安装开口位于安装壳的一端，第三安装开口位于安装壳的另一端。
进一步地，电池单元还包括多个连接支架，第二安装开口和第三安装开口处均设置有一个连接支架，电芯组远离极耳连接区的极耳与连接支架相连接。
进一步地，连接支架包括第一汇流件，电芯组远离极耳连接区的极耳与第一汇流件相连接，电芯模块还包括两个集成托盘，两个集成托盘中的一个安装在电芯模块的一端，两个集成托盘中的另一个安装在电芯模块的另一端，两个集成托盘均包括多个第二汇流件，各第二汇流件与其所在侧的各第一汇流件一一对应连接。
进一步地，安装壳包括依次连接的第一连接板、第二连接板和第三连接板，第二连接板相对于第一连接板折弯，第三连接板相对于第二连接板折弯，第一连接板和第三连接板的对应位置处均设置有一个凹槽，连接结构卡设在两个凹槽上。
进一步地，电芯模块还包括多个隔片，相邻两个安装壳之间均设置有一个隔片。
进一步地，电芯模块还包括第一低压采样组件，各电池单元的连接片均与第一低压采样组件电连接。
进一步地，第一低压采样组件包括第一线路集成板、第一采集件以及多个镍片，第一线路集成板包括第一集成板段和第二集成板段，第一集成板段和第二集成板段的一端通过第一采集件相连接，第一集成板段和第二集成板段之间间隔设置，第一集成板段和第二集成板段靠近彼此的一侧沿长度方向交错设置有多个镍片，且各镍片之间沿排布方向间隔设置，各电池单元的连接片与各镍片一一对应连接。
进一步地，电芯模块还包括两个第二低压采样组件，两个集成托盘上均设置有一个第二低压采样组件，每个第二低压采样组件均包括第二采集件、第二线路集成板以及多个镍片。
根据本申请的一方面，提供了一种电池包，包括：上述的电芯模块；箱体，各电芯模块安装在箱体中；多个液冷板，多个液冷板设置在各电芯模块的顶部。
应用本申请的技术方案，通过设置电池单元，且每个电池单元包括至少两个电芯组，每个电芯组均包括两个沿电池单元的长度延伸方向连接的电芯，相邻两个电芯组之间通过连接 结构进行电连接，这样，一个电池单元中就包含两列沿第一方向排布的电芯，且两列电芯之间通过连接结构即可实现电连接，通过上述设置能够增大单个电芯模块的能量密度，相较于现有的单排电芯成组方式，上述技术方案的电芯模块的集成化程度更高，单个电芯模块所具有的能量密度更大，能够大幅度提升电池的续航里程，同时由于集成化程度较高还能够提高装配效率，节约装配时间和装配成本。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了本申请的实施例的电芯模块的整体结构示意图；
图2示出了本申请的实施例的电池单元的整体结构示意图；
图3示出了本申请的实施例的连接结构的整体结构示意图；
图4示出了本申请的实施例的连接片的整体结构示意图；
图5示出了本申请的实施例的第一低压采样组件的整体结构示意图；
图6示出了本申请的实施例的第二低压采样组件的整体结构示意图；
图7示出了本申请的实施例的集成托盘的结构示意图；
图8示出了本申请的实施例的温度采集件的整体结构示意图；
图9示出了本申请的实施例的电芯模块中间位置处的电压及温度采集结构示意图；以及
图10示出了本申请的实施例的电池包的爆炸图。
其中，上述附图包括以下附图标记：
10、连接结构；11、连接片；111、第一板段；112、第二板段；113、第三板段；12、安
装支架；13、底座；131、第一插槽；14、卡板；141、第二插槽；142、U型板；1421、底板；1422、侧板；143、搭接板；20、电池单元；21、电芯组；22、极耳连接区；23、连接支架；231、第一汇流件；30、安装壳；31、安装腔；32、第一安装开口；33、第二安装开口；34、第三安装开口；35、第一连接板；351、凹槽；36、第二连接板；37、第三连接板；40、集成托盘；41、第二汇流件；50、液冷板；60、隔片；70、第一低压采样组件；71、第一线路集成板；711、第一集成板段；712、第二集成板段；72、第一采集件；80、镍片；90、第二低压采样组件；91、第二采集件；92、第二线路集成板；93、绝缘罩；94、温度采集件；95、引出极片；100、箱体；101、箱盖；102、下箱体；103、导热结构胶。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
结合参见图1至图8所示，本申请提供了一种电芯模块，包括：连接结构10；至少一个电池单元20，每个电池单元20均包括至少两个电芯组21，同一电池单元20中的各电芯组21沿第一方向依次排布，且相邻两个电芯组21之间通过一个连接结构10电连接，每个电芯组21均包括两个沿电池单元20的长度延伸方向连接的电芯。
在本实施例中，每个电池单元20包括至少两个电芯组21，并且每个电芯组21均包括两个沿电池单元20的长度延伸方向连接的电芯，两个电芯之间串联，相邻两个电芯组21之间通过连接结构10进行电连接，这样，一个电池单元20中就包含两列沿第一方向排布的电芯，且两列电芯之间通过连接结构10即可实现电连接。当电芯模块只包含一个电池单元20时，电芯模块具有两列沿第一方向排布的电芯，当电芯模块包括多个电池单元20时，多个电池单元20沿第一方向依次排布并固定连接在一起，此时电芯模块同样具有两列沿第一方向排布的电芯，能够增大单个电芯模块的能量密度，相较于现有的单排电芯成组方式，上述技术方案的电芯模块的集成化程度更高，单个电芯模块所具有的能量密度更大，能够大幅度提升电池的续航里程，同时由于集成化程度较高，还能够提高装配效率，节约装配时间和装配成本。
结合参见图1和图2所示，本申请的一个实施例中，每个电芯组21在两个电芯的连接端具有极耳连接区22，连接结构10包括连接片11，连接片11的一端与相邻两个电芯组21中的一个极耳连接区22相连接，连接片11的另一端与相邻两个电芯组21中的另一个极耳连接区22相连接。
在本实施例中，连接片11的一端与相邻两个电芯组21中的一个极耳连接区22相连接，连接片11的另一端与相邻两个电芯组21中的另一个极耳连接区22相连接，这样能够实现相邻两个电芯组21之间的并联。另外，各电芯组21中，两个电芯在极耳连接区22位置的极耳是直接连接的，不需要其他连接结构或连接件，结构较为简单，因此，能够减少零部件的数量，降低成本。
结合参见图1至图4所示，本申请的一个实施例中，相邻两个电芯组21的极耳连接区22之间具有间隙，连接结构10还包括安装支架12，安装支架12包括底座13和卡板14，卡板14安装在底座13上，底座13位于间隙内，底座13的外壁面上设置有第一插槽131，卡板14上设置有第二插槽141，连接片11穿过第二插槽141后卡设在第一插槽131内。
在本实施例中，相邻两个电芯组21的极耳连接区22之间具有间隙，底座13位于间隙内，连接片11穿过卡板14上的第二插槽141后卡设在底座13外壁面上的第一插槽131内，这样，底座13既能够为连接片11提供安装位置，还能够对连接片11的两侧进行支撑限位，保证电池单元20内部的结构稳定性。
结合参见图1至图4所示，本申请的一个实施例中，卡板14包括U型板142和两个搭接板143，U型板142包括一个底板1421和设置在底板1421两侧的两个侧板1422，两个搭接板143中的一个与其中一个侧板1422连接，两个搭接板143中的另一个与另一个侧板1422 连接，且两个搭接板143均从U型板142的开口端向U型板142的外侧侧向延伸；安装壳30包括依次连接的第一连接板35、第二连接板36和第三连接板37，第二连接板36相对于第一连接板35折弯，第三连接板37相对于第二连接板36折弯，第一连接板35和第三连接板37的对应位置处均设置有一个凹槽351，连接结构10卡设在两个凹槽351上。
在本实施例中，两个搭接板143分别与U型板142的两个侧板1422相连接，并向U型板142的外侧侧向延伸，此时，两个搭接板143与U型板142的两端能够形成L型卡设结构，安装支架12可通过L型卡设结构卡设在两个凹槽351上，此时，安装支架12固定安装在安装壳30上，安装支架12处于稳定状态，以使卡设在安装支架12上的连接片11保持稳定，从而能够保证相邻两个电芯组21之间的连接更加稳定。
结合参见图3和图4所示，本申请的一个实施例中，两个第二插槽141间隔设置在底板1421上，连接片11包括依次连接的第一板段111、第二板段112和第三板段113，第二板段112相对于第一板段111折弯，第三板段113相对于第二板段112折弯，第一板段111从两个第二插槽141中的一个穿入，第三板段113从两个第二插槽141中的另一个穿入。
在本实施例中，第二板段112相对于第一板段111折弯，第三板段113相对于第二板段112折弯，即连接片11为U型结构，第一板段111从两个第二插槽141中的一个穿入，第三板段113从两个第二插槽141中的另一个穿入，此时连接片11卡设在底座13的外壁面上，并且第一板段111和第三板段113分别位于底座13外壁面的第二插槽141内，连接片11通过卡设的方式安装在安装支架12上，既方便安装和拆卸，同时能够节约安装空间，并且当连接片11或者安装支架12发生损坏时，可方便进行更换，且只需更换损坏的连接片11或者安装支架12，无需整体替换，能够节约成本。
结合参见图1和图2所示，本申请的一个实施例中，电芯模块还包括安装壳30，每个电池单元20均安装在一个安装壳30内，安装壳30包括安装腔31和与安装腔31相连通的安装开口，安装开口包括第一安装开口32、第二安装开口33和第三安装开口34，电池单元20可通过第一安装开口32装入安装腔31内，第二安装开口33位于安装壳30的一端，第三安装开口34位于安装壳30的另一端；电池单元20还包括多个连接支架23，第二安装开口33和第三安装开口34处均设置有一个连接支架23，电芯组21远离极耳连接区22的极耳与连接支架23相连接。
在本实施例中，电芯模块的每个电池单元20均安装在一个安装壳30内，电池单元20从第一安装开口32装入安装壳30的安装腔31后，再在第二安装开口33和第三安装开口34处分别装上一个连接支架23，再将电芯组21远离极耳连接区22的极耳焊接在连接支架23上，实现相邻两个电芯组21之间的并联。另外，安装壳30具有多个安装开口，方便电池单元20和连接支架23的安装和替换。
在本申请的一个实施例中，安装在同一个安装壳30内的相邻两个电芯组21之间设置有一个隔片60。
结合参见图1至图7所示，本申请的一个实施例中，连接支架23包括第一汇流件231，电芯组21远离极耳连接区22的极耳与第一汇流件231相连接，电芯模块还包括两个集成托盘40，两个集成托盘40中的一个安装在电芯模块的一端，两个集成托盘40中的另一个安装在电芯模块的另一端，两个集成托盘40均包括多个第二汇流件41，各第二汇流件41与其所在侧的各第一汇流件231一一对应连接。
在本实施例中，连接支架23上设置有第一汇流件231，电芯组21远离极耳连接区22的极耳与第一汇流件231激光焊接在一起，两个集成托盘40分别安装在电芯模块的两端，集成托盘40上设置有多个第二汇流件41，当集成托盘40安装在电芯模块上时，集成托盘40上的多个第二汇流件41与各连接支架23上的第一汇流件231一一对应，并且，第二汇流件41和第一汇流件231激光焊接在一起。
在本申请的一个实施例中，第一汇流件231和第二汇流件41可以为汇流铝片。电芯模块还包括绝缘罩93，两个集成托盘40上均安装有一个绝缘罩93，绝缘罩93起到绝缘防护的作用。
结合参见图1所示，本申请的一个实施例中，电芯模块还包括多个隔片60，相邻两个安装壳30之间均设置有一个隔片60。
在本实施例中，电芯模块包括多个电池单元20，且每个电池单元20均安装在一个安装壳30内，相邻两个安装壳30之间均设置有一个隔片60，相邻两个安装壳30分别粘接在隔片60的两侧，并通过隔片60固定连接在一起，从而实现相邻两个电池单元20的连接。
在本申请的一个实施例中，电芯模块包括多个电池单元20，且所有电池单元20均安装在一个安装壳30内，且相邻两个电芯组21分别粘接在隔片60的两侧，并通过隔片60固定连接在一起。
结合参见图1至图9所示，本申请的一个实施例中，电芯模块还包括第一低压采样组件70，各电池单元20的连接片11均与第一低压采样组件70电连接。
通过上述设置，第一低压采样组件70采集各电芯组21的电压值，方便工作人员掌握电芯模块的工作状态，及时发现异常情况。
结合参见图1至图9所示，本申请的一个实施例中，第一低压采样组件70包括第一线路集成板71、第一采集件72以及多个镍片80，第一线路集成板71包括第一集成板段711和第二集成板段712，第一集成板段711和第二集成板段712的一端通过第一采集件72相连接，第一集成板段711和第二集成板段712之间间隔设置，第一集成板段711和第二集成板段712靠近彼此的一侧沿长度方向交错设置有多个镍片80，且各镍片80之间沿排布方向间隔设置，各电池单元20的连接片11与各镍片80一一对应连接。
在本实施例中，第一集成板段711和第二集成板段712的一端通过第一采集件72相连接，即第一采集件72的一端与第一集成板段711相连接，第一采集件72的另一端与第二集成板段712相连接，第一采集件72可以设置在第一集成板段711和第二集成板段712的一端的端部， 也可以设置在第一集成板段711和第二集成板段712的中部。第一集成板段711和第二集成板段712之间间隔设置，且两者之间的间隔距离大于镍片80的长度，保证镍片80的安装空间。第一集成板段711和第二集成板段712靠近彼此的一侧沿长度方向交错设置有多个镍片80，且各镍片80之间沿排布方向间隔设置，相邻两个镍片80之间的间隔距离应该与相邻两个电芯组21的连接片11之间的距离相匹配，以保证第一低压采样组件70安装后，各个镍片80所在位置与各连接片11所在位置一一对应，从而保证采集数据的准确性和全面性。
结合参见图1至图9所示，本申请的一个实施例中，电芯模块还包括两个第二低压采样组件90，两个集成托盘40上均设置有一个第二低压采样组件90，每个第二低压采样组件90均包括第二采集件91、第二线路集成板92以及多个镍片80。
在本实施例中，第二低压采样组件90安装在集成托盘40上，第二采集件91用于采集电芯模块远离极耳连接区22位置处的电压值，方便实时检测电芯模块的运行状态。
在本申请的一个实施例中，第一采集件72和第二采集件91可以为插接件。电芯模块还包括温度采集件94，温度采集件94穿过并折弯贴合在第二线路集成板92上后，通过焊接的方式将温度采集件94固定安装在第二低压采样组件90上。温度采集件94穿过并折弯贴合在第一线路集成板71上后，通过焊接的方式将温度采集件94固定安装在第一低压采样组件70上。温度采集件94的数量和放置位置，可根据热管理需求进行合理设置，且温度采集件94需要粘接在相邻两个电池单元20之间。
在本申请的一个实施例中，集成托盘40上还设置有引出极片95。使用时，电流从1个引出极片95流入，通过第二汇流件41，依次流经每个电池单元20，最终从另一个引出极片95流出。当电池单元20的数量为偶数时，设置有2个引出极片95，且两个引出极片95位于电芯模块的同侧，当电池单元20的数量为奇数时，设置有2个引出极片95，此时，两个引出极片95位于电芯模块的异侧。
如图10所示，根据本申请的另一方面，提供了一种电池包，包括：上述的电芯模块；箱体100，各电芯模块安装在箱体100中；多个液冷板50，多个液冷板50设置在各电芯模块的顶部。
在本实施例中，箱体100包括箱盖101和下箱体102，多个电芯模块通过导热结构胶103固定安装在下箱体102中，多个液冷板50通过导热结构胶103粘接在电芯模块的顶部，箱盖101和下箱体102之间通过螺栓可拆卸地连接在一起。
从以上的描述中，可以看出，本申请的上述的实施例实现了如下技术效果：通过设置电池单元，且每个电池单元均包括至少两个电芯组，每个电芯组均包括两个沿电池单元的长度延伸方向连接的电芯，相邻两个电芯组之间通过连接结构进行电连接，这样，一个电池单元中就包含两列沿第一方向排布的电芯，且两列电芯之间通过连接结构即可实现电连接，通过上述设置能够增大单个电芯模块的能量密度，相较于现有的单排电芯成组方式，上述技术方案的电芯模块的集成化程度更高，单个电芯模块所具有的能量密度更大，能够大幅度提升电池的续航里程，同时由于集成化程度较高还能够提高装配效率，节约装配时间和装配成本。
显然，上述所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、工作、器件、组件和/或它们的组合。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种电芯模块，其特征在于，包括：
    连接结构(10)；
    至少一个电池单元(20)，每个所述电池单元(20)均包括至少两个电芯组(21)，同一所述电池单元(20)中的各所述电芯组(21)沿第一方向依次排布，且相邻两个所述电芯组(21)之间通过一个所述连接结构(10)电连接，每个所述电芯组(21)均包括两个沿所述电池单元(20)的长度延伸方向连接的电芯。
  2. 根据权利要求1所述的电芯模块，其特征在于，每个所述电芯组(21)在两个所述电芯的连接端具有极耳连接区(22)，所述连接结构(10)包括连接片(11)，所述连接片(11)的一端与相邻两个所述电芯组(21)中的一个所述极耳连接区(22)相连接，所述连接片(11)的另一端与相邻两个所述电芯组(21)中的另一个所述极耳连接区(22)相连接。
  3. 根据权利要求2所述的电芯模块，其特征在于，相邻两个所述电芯组(21)的所述极耳连接区(22)之间具有间隙，所述连接结构(10)还包括安装支架(12)，所述安装支架(12)包括底座(13)和卡板(14)，所述卡板(14)安装在所述底座(13)上，所述底座(13)位于所述间隙内，所述底座(13)的外壁面上设置有第一插槽(131)，所述卡板(14)上设置有第二插槽(141)，所述连接片(11)穿过所述第二插槽(141)后卡设在所述第一插槽(131)内。
  4. 根据权利要求3所述的电芯模块，其特征在于，所述卡板(14)包括U型板(142)和两个搭接板(143)，所述U型板(142)包括一个底板(1421)和设置在所述底板(1421)两侧的两个侧板(1422)，两个所述搭接板(143)中的一个与其中一个所述侧板(1422)连接，两个所述搭接板(143)中的另一个与另一个所述侧板(1422)连接，且两个所述搭接板(143)均从所述U型板(142)的开口端向所述U型板(142)的外侧侧向延伸。
  5. 根据权利要求4所述的电芯模块，其特征在于，两个所述第二插槽(141)间隔设置在所述底板(1421)上，所述连接片(11)包括依次连接的第一板段(111)、第二板段(112)和第三板段(113)，所述第二板段(112)相对于所述第一板段(111)折弯，所述第三板段(113)相对于所述第二板段(112)折弯，所述第一板段(111)从两个所述第二插槽(141)中的一个穿入，所述第三板段(113)从两个所述第二插槽(141)中的另一个穿入。
  6. 根据权利要求2所述的电芯模块，其特征在于，所述电芯模块还包括安装壳(30)，每个所述电池单元(20)均安装在一个所述安装壳(30)内，所述安装壳(30)包括安装腔(31)和与所述安装腔(31)相连通的安装开口，所述安装开口包括第一安装开口(32)、第二安装开口(33)和第三安装开口(34)，所述电池单元(20)可通过所述第一安装开口(32)装入所述安装腔(31)内，所述第二安装开口(33)位于所述安装壳(30)的一端，所述第三安装开口(34)位于所述安装壳(30)的另一端。
  7. 根据权利要求6所述的电芯模块，其特征在于，所述电池单元(20)还包括多个连接支架(23)，所述第二安装开口(33)和所述第三安装开口(34)处均设置有一个所述连接 支架(23)，所述电芯组(21)远离所述极耳连接区(22)的极耳与所述连接支架(23)相连接。
  8. 根据权利要求7所述的电芯模块，其特征在于，所述连接支架(23)包括第一汇流件(231)，所述电芯组(21)远离所述极耳连接区(22)的极耳与所述第一汇流件(231)相连接，所述电芯模块还包括两个集成托盘(40)，两个所述集成托盘(40)中的一个安装在所述电芯模块的一端，两个所述集成托盘(40)中的另一个安装在所述电芯模块的另一端，两个所述集成托盘(40)均包括多个第二汇流件(41)，各所述第二汇流件(41)与其所在侧的各所述第一汇流件(231)一一对应连接。
  9. 根据权利要求6所述的电芯模块，其特征在于，所述安装壳(30)包括依次连接的第一连接板(35)、第二连接板(36)和第三连接板(37)，所述第二连接板(36)相对于所述第一连接板(35)折弯，所述第三连接板(37)相对于所述第二连接板(36)折弯，所述第一连接板(35)和所述第三连接板(37)的对应位置处均设置有一个凹槽(351)，所述连接结构(10)卡设在两个所述凹槽(351)上。
  10. 根据权利要求6至9中任一项所述的电芯模块，其特征在于，所述电芯模块还包括多个隔片(60)，相邻两个所述安装壳(30)之间均设置有一个所述隔片(60)。
  11. 根据权利要求2所述的电芯模块，其特征在于，所述电芯模块还包括第一低压采样组件(70)，各所述电池单元(20)的所述连接片(11)均与所述第一低压采样组件(70)电连接。
  12. 根据权利要求11所述的电芯模块，其特征在于，所述第一低压采样组件(70)包括第一线路集成板(71)、第一采集件(72)以及多个镍片(80)，所述第一线路集成板(71)包括第一集成板段(711)和第二集成板段(712)，所述第一集成板段(711)和所述第二集成板段(712)的一端通过所述第一采集件(72)相连接，所述第一集成板段(711)和所述第二集成板段(712)之间间隔设置，所述第一集成板段(711)和所述第二集成板段(712)靠近彼此的一侧沿长度方向交错设置有多个所述镍片(80)，且各所述镍片(80)之间沿排布方向间隔设置，各所述电池单元(20)的所述连接片(11)与各所述镍片(80)一一对应连接。
  13. 根据权利要求8所述的电芯模块，其特征在于，所述电芯模块还包括两个第二低压采样组件(90)，两个所述集成托盘(40)上均设置有一个所述第二低压采样组件(90)，每个所述第二低压采样组件(90)均包括第二采集件(91)、第二线路集成板(92)以及多个镍片(80)。
  14. 一种电池包，其特征在于，包括：
    多个权利要求1至13中任一项所述的电芯模块；
    箱体(100)，各所述电芯模块安装在所述箱体(100)中；
    多个液冷板(50)，多个所述液冷板(50)设置在各所述电芯模块的顶部。
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