WO2023125069A1 - 一种电芯总成及电池包 - Google Patents

一种电芯总成及电池包 Download PDF

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Publication number
WO2023125069A1
WO2023125069A1 PCT/CN2022/139545 CN2022139545W WO2023125069A1 WO 2023125069 A1 WO2023125069 A1 WO 2023125069A1 CN 2022139545 W CN2022139545 W CN 2022139545W WO 2023125069 A1 WO2023125069 A1 WO 2023125069A1
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WO
WIPO (PCT)
Prior art keywords
battery
cell assembly
cell
bracket
end plate
Prior art date
Application number
PCT/CN2022/139545
Other languages
English (en)
French (fr)
Inventor
林倡全
邓嘉东
易国高
Original Assignee
珠海冠宇动力电源有限公司
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 珠海冠宇动力电源有限公司 filed Critical 珠海冠宇动力电源有限公司
Publication of WO2023125069A1 publication Critical patent/WO2023125069A1/zh
Priority to US18/525,630 priority Critical patent/US20240097268A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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 batteries, in particular to a battery cell assembly and a battery pack.
  • Cars generally have the function of starting and stopping. When the car starts the engine or waits for traffic lights, it needs battery power to ensure the normal start of the engine and the work of the on-board electrical appliances.
  • the battery used for starting and stopping the car needs to provide a large current in a short time. And it needs to have the function of repeatedly charging.
  • lead-acid batteries The traditional starting and stopping of automobiles is usually powered by lead-acid batteries.
  • a lead-acid battery is a battery whose electrodes are mainly made of lead and its oxides.
  • the electrolyte is a sulfuric acid solution.
  • the technology of lead-acid batteries is very mature, but considering environmental protection Many countries in Europe and the United States have begun to ban lead, which restricts the further development of lead-acid batteries as automobile start-stop batteries.
  • lead-acid batteries have low energy density and short lifespan for high-current charging and discharging.
  • the application provides a battery cell assembly and a battery pack, which can replace the battery of a lead-acid battery and meet the demand for power supply for an automobile start-stop system.
  • the present application provides a battery assembly, including: a bracket and several battery modules electrically connected to each other, the bracket is arranged between two adjacent battery modules, the The cell module includes a plurality of single cells arranged side by side, and the plurality of single cells are electrically connected to each other.
  • the battery assembly provided by this application provides a new idea for the power supply of the start-stop of the car, which can replace the lead-acid battery and meet the needs of power supply for the start-stop system of the car, and conforms to the development trend of the times.
  • This application provides A battery assembly, in which a plurality of the single batteries are electrically connected to each other, and a plurality of the battery modules are electrically connected to each other, and the modular production method can flexibly configure the battery modules according to the usage requirements
  • the quantity can meet the power supply demand for the start and stop of the car, and it also has the advantages of high integration, easy automatic production, and higher product consistency and reliability.
  • the height of the bracket is 7mm-10mm lower than the height of the single cell
  • the height of the bracket is 133mm-140mm.
  • it further includes a protective frame, the protective frame is wrapped around the outside of the several battery core modules, and the inner wall of the protective frame and the several battery core modules pass through Adhesive bonding.
  • a buffer member is also included, between the cell module and the bracket, between the cell module and the protective frame, and between two adjacent cells
  • the buffers are arranged between the battery cells.
  • the compression distance of the buffer member is greater than the expansion distance of the battery module.
  • the buffer member is foam, and the thickness of the foam is 1.5mm-3mm.
  • the bracket is an aluminum bracket
  • the inside of the stent is a hollow structure; and/or
  • the thickness of the bracket is 5mm-8mm.
  • the protective frame includes several end plates connected to each other, and a surface of the end plates facing the corresponding buffer member has reinforcing ribs.
  • the end plate is also provided with holes.
  • a plurality of the single cells are connected in series through a lead row, and the plurality of cell modules are connected in series through a lead row.
  • the present application also provides a battery pack, including a box body and the above-mentioned battery cell assembly, and the battery cell assembly is located in the box body.
  • the bracket is arranged between two adjacent cell modules, and the bracket can support and fix the cell module, The vibration of the battery module can be effectively reduced.
  • the inside of the bracket is a hollow structure, and the bracket is provided with a plurality of weight-reducing holes for reducing the weight of the bracket, thereby reducing the weight of the battery cell assembly.
  • the installation of the buffer member can A safe distance is reserved for the expansion between the single cells to improve the safety of use.
  • FIG. 1 is a schematic diagram of an exploded structure of a cell assembly provided in an embodiment of the present application
  • Fig. 2 is a schematic diagram of another exploded structure of the cell assembly provided by the embodiment of the present application.
  • FIG. 3 is a schematic diagram of the three-dimensional structure of the battery cell assembly provided by the embodiment of the present application.
  • FIG. 4 is a schematic diagram of an exploded structure of a battery pack provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a three-dimensional structure of a battery pack provided in an embodiment of the present application.
  • Fig. 6 is a schematic diagram of another three-dimensional structure of the cell assembly provided by the embodiment of the present application.
  • Fig. 7 is a top view of Fig. 3 of the cell assembly provided by the embodiment of the present application.
  • Fig. 8 is the front view of Fig. 3 of the cell assembly provided by the embodiment of the present application.
  • Fig. 9 is a left view of Fig. 3 of the cell assembly provided by the embodiment of the present application.
  • Fig. 10 is the right view of Fig. 3 of the cell assembly provided by the embodiment of the present application.
  • Fig. 11 is the bottom view of Fig. 3 of the cell assembly provided by the embodiment of the present application.
  • Fig. 12 is a front view of the front end plate of the cell assembly provided by the embodiment of the present application.
  • Fig. 13 is a schematic diagram of the three-dimensional structure of the front end plate of the battery cell assembly provided by the embodiment of the present application;
  • Fig. 14 is a right view of the front end plate of the cell assembly provided by the embodiment of the present application.
  • Fig. 15 is a top view of the front end plate of the cell assembly provided by the embodiment of the present application.
  • Fig. 16 is a front view of the first side end plate or the second side end plate of the cell assembly provided by the embodiment of the present application;
  • Fig. 17 is a schematic perspective view of the first side end plate or the second side end plate of the cell assembly provided by the embodiment of the present application;
  • Fig. 18 is a left view of the first side end plate or the second side end plate of the cell assembly provided by the embodiment of the present application;
  • Fig. 19 is a top view of the first side end plate or the second side end plate of the cell assembly provided by the embodiment of the present application;
  • Fig. 20 is a schematic perspective view of the three-dimensional structure of the bracket of the battery cell assembly provided by the embodiment of the present application;
  • Fig. 21 is a front view of the bracket of the cell assembly provided by the embodiment of the present application.
  • Fig. 22 is a top view of the bracket of the cell assembly provided by the embodiment of the present application.
  • Fig. 23 is a right view of the bracket of the battery cell assembly provided by the embodiment of the present application.
  • the battery used for starting and stopping the car needs to respond immediately when the engine is started. It needs to have a higher capacity to meet the needs of the engine shutdown and the work of the electrical appliances in the car. It also needs to have good deep discharge performance to meet the needs of the car.
  • the start and stop of automobiles is usually powered by lead-acid batteries. As many countries in Europe and the United States conform to the general trend of international lead ban, the development of lead-acid batteries has been hindered. Therefore, it is necessary to find new batteries to replace lead-acid batteries to meet the needs of automobile start-stop Power requirements.
  • the battery assembly provided by this application has a structure in which several battery modules are electrically connected to each other, so that this application provides a battery assembly, which can facilitate modular production and flexibly configure batteries according to usage requirements
  • the number of modules can meet the demand for large current power supply in a short period of time, and meet the power supply demand for starting and stopping the car.
  • the present application provides a cell assembly, including: a bracket 30 and several cell modules 20 electrically connected to each other, the bracket 30 is arranged on two adjacent cell modules 20 Among them, the cell module 20 includes a plurality of single cells 21 arranged side by side, and the plurality of single cells 21 are electrically connected to each other.
  • the battery assembly provided by this application provides a new idea for the power supply of automobile start-stop, which can replace the lead-acid battery for the power supply of automobile start-stop system, and conforms to the development trend of the times. Assembly Since multiple single cells 21 are electrically connected to each other, and several cell modules 20 are electrically connected to each other, the modular production method can flexibly configure the number of cell modules 20 according to the usage requirements, which can meet the requirements in a short time. It provides a large current power supply demand within the car to meet the power supply demand for the start and stop of the car, and also has the advantages of a high degree of integration, easy automation of production, and higher product consistency and reliability.
  • a bracket 30 is provided between two adjacent battery cell modules 20, and the bracket 30 can be used to support and fix The function of the cell module 20 can effectively reduce the vibration of the cell module 20 .
  • several cell modules 20 are electrically connected to each other, and the several cell modules 20 may be connected in series. In another possible implementation manner, several cell modules 20 may also be connected in parallel, or connected in parallel and in series.
  • the multiple single cells 21 are electrically connected to each other, and the multiple single cells 21 may be connected in series. In another possible implementation manner, multiple single cells 21 may also be connected in parallel, or connected in series and parallel.
  • a plurality of single cells 21 are connected in series through a lead bar 60 , and several cell modules 20 are connected in series through a lead bar 60 .
  • Several cell modules 20 are connected in series through lead wires 60.
  • the upper end of the single cell 21 has a first tab 211 and a second tab 212. After the first tab 211 and the second tab 212 are bent, The first tab 211 of a single battery cell 21 and the second tab 212 of another single battery cell 21 are serially connected in series through a plurality of lead wires 60 , so as to realize the series connection of multiple single battery cells 21 .
  • the lead bar 60 may be a copper bar or an aluminum bar.
  • the single cell 21 is a lithium ion cell.
  • the single battery cell 21 can include a positive electrode sheet, a negative electrode sheet, and a separator spaced between adjacent positive electrode sheets and negative electrode sheets and then stacked sequentially.
  • the separator prevents the positive electrode sheet and the negative electrode sheet from contacting and short-circuiting. The function of electrolyte ions in the liquid to pass through.
  • the upper end of the single cell 21 has a first tab 211 and a second tab 212, one of the first tab 211 and the second tab 212 is a positive tab, and the first tab 211 is a positive tab.
  • the other one of the tab 211 and the second tab 212 is a negative tab, the positive tab is electrically connected to the positive tab, and the negative tab is electrically connected to the negative tab.
  • the height of the bracket 30 is 7 mm to 10 mm lower than the height of the single cell 21; this can ensure a certain height difference between the bracket 30 and the single cell 21, and prevent the bracket 30 from touching
  • the first tab 211 and the second tab 212 on the single cell 21 improve the safety of use.
  • the height of the bracket 30 is 7 mm, 8 mm, 9 mm or 10 mm lower than the height of the single cell 21 .
  • a cell assembly provided in this embodiment further includes a buffer member 22, between the cell module 20 and the bracket 30, between the cell module 20 and the protective Buffers 22 are provided between frames 40 and between two adjacent single cells 21 .
  • the compression distance of the buffer member 22 is greater than the expansion distance of the cell module 20 .
  • the single battery cell 21 will expand slightly due to heat, which will cause the overall volume of the battery cell module 20 to increase. Setting the buffer member 22 can leave a safe distance for the expansion of the single battery cells 21 to improve Use security.
  • the buffer member 22 is foam, and the compression of the foam is 60%.
  • the thickness of the foam is 1.5mm-3mm.
  • the thickness of the foam is 1.5mm, 2mm, 2.5mm or 3mm.
  • the height H of the bracket 30 may be 133mm ⁇ 140mm.
  • the height H of the bracket 30 may be 133mm, 135mm, 138mm or 140mm.
  • the bracket 30 is an aluminum bracket, as shown in FIG. 20 and FIG. 21 , the thickness T of the bracket 30 is 5mm ⁇ 8mm.
  • the thickness of the bracket 30 can not be too thin or too thick, for example, the thickness T of the bracket 30 can be 5mm, 6mm, 7mm or 8mm.
  • the inside of the bracket 30 is a hollow structure, and a plurality of weight-reducing holes 31 are arranged in the bracket 30 to reduce the weight of the bracket 30, thereby reducing the weight of the battery cell.
  • the weight of the assembly can be a circular hole or a waist-shaped hole.
  • the weight-reducing hole 31 can also be of other shapes, as long as the weight of the bracket 30 can be reduced, and no specific limitation is set here.
  • a cell assembly provided in this embodiment further includes a protective frame 40 , and the protective frame 40 is wrapped on the outside of several cell modules 20 , and the inner wall of the protective frame 40 is bonded to several cell modules 20 by an adhesive.
  • the protective frame 40 securely fixes several cell modules 20 together, which not only fixes the cell modules 20 , but also enhances the anti-vibration capability of the cell modules 20 .
  • the protective frame 40 includes several end plates 41 connected to each other, and the surface of the end plate 41 facing the corresponding buffer member 22 has a reinforcing rib 417; refer to FIG. 8 , as shown in Figure 9 and Figure 10, the reinforcing rib 417 can be a structure in which several longitudinal protrusions and several transverse protrusions are staggered, and the number of longitudinal protrusions and several transverse protrusions can be flexibly set according to the needs of use, and can be the same It can also be different.
  • the length of the rib 417 is 80%-95% of the length of the cell assembly, and the height of the rib 417 is 70%-90% of the height of the single cell 21 .
  • the length of the rib 417 can be 80%, 90% or 95% of the length of the cell assembly, and the height of the rib 417 can be 70%, 80% or 90% of the height of the single cell 21 .
  • the several end plates 41 are a front end plate 411, a first side end plate 413, a back end plate 412 and a second side end plate 414, that is,
  • the protective frame 40 includes a front end plate 411 , a first side end plate 413 , a back end plate 412 and a second side end plate 414 connected end to end in sequence.
  • the two ends of the front end plate 411 respectively have the first flanging 4111 and the second flanging 4112
  • the two ends of the back end plate 412 respectively have the third flanging 4121 and the fourth flanging side 4122
  • the side of the first side end plate 413 facing the cell module 20 is in contact with the first flange 4111 and the third flange 4121
  • the side of the second side end plate 414 facing the cell module 20 is in contact with the second flange
  • the edge 4112 is in contact with the fourth flange 4122 .
  • the first side end plate 413 may be connected to the first flange 4111 and the third flange 4121 through screws or rivets, and the first flange 4111 and the third flange 4121 are provided with holes for Opening slots for fixing screws or rivets.
  • the second side end plate 414 can be connected with the second flange 4112 and the fourth flange 4122 by screws or rivets. An open slot for a screw or rivet.
  • the protective frame 40 further includes a bottom end plate 415, and the bottom end plate 415 is located at the bottom of the cell module 20, that is, the bottom end plate 415 and the lead bar 60 They are respectively located at opposite ends of the cell module 20, as shown in Fig. 13 and Fig. 14, the bottoms of the front end plate 411 and the back end plate 412 have fifth flanges 4123, as shown in Fig. 2 and Fig.
  • the end plates 415 are connected to the fifth flanges 4123 respectively, and both sides of the bottom end plate 415 are respectively connected to the fifth flanges 4123 of the rear end plate 412 and the fifth flanges 4123 of the front end plate 411 by screws or rivets.
  • screw holes are opened on the fifth flange 4123 to facilitate the connection of screws or rivets.
  • the ends of the first side end plate 413 and the second side end plate 414 facing away from the bottom end plate 415 are uniformly connected to the sixth flange 4141, as shown in Figure 4 and Figure 17, the sixth The flange 4141 is used to connect with the ear frame plate 50 , and the insulating plate 70 is connected to the ear frame plate 50 .
  • the sixth flange 4141 may be perpendicular to the first side end plate 413 or the second side end plate 414 .
  • both ends of the bottom end plate 415 also have seventh flanges 4151 .
  • the seventh flanges at both ends of the bottom end plate 415 4151 are respectively connected with the first side end plate 413 and the second side end plate 414 by screws.
  • a buffer 22 is provided between the cell module 20 and the protective frame 40, that is, a buffer 22 is provided between the face of the cell module 20 facing the front end plate 411 and the front end plate 411
  • a buffer member 22 is provided between the surface of the cell module 20 facing the first side end plate 413 and the first side end plate 413, and a buffer is provided between the surface of the cell module 20 facing the back end plate 412 and the back end plate 412 Part 22, the buffer member 22 is arranged between the second side end plate 414 of the cell module 20 facing the second side end plate 414, and the buffer member 22 is arranged between the surface of the cell module 20 facing the bottom end plate 415 and the bottom end plate 415.
  • the cushioning member 22 is provided.
  • the end plate 41 is further provided with an opening 416 .
  • the opening 416 is used to inject adhesive on the side of the end plate 41 facing away from the battery module 20 and facing the side of the end plate 41 facing the battery module 20, so that the battery module 20 and the end plate 41 are bonded by the adhesive. Knot.
  • openings 416 may be formed on the front end plate 411 and the back end plate 412 , and the number of openings 416 may be flexibly selected according to usage requirements, which is not specifically limited here.
  • the binder may be glue.
  • a battery assembly provided by the present application includes several battery modules 20 that are electrically connected to each other, and the battery module 20 includes a plurality of single battery cells 21 that are electrically connected to each other, and modular production can reduce zero.
  • the cost of component procurement and labor cost of assembly simplifies the production process and improves the production efficiency of the battery cell assembly.
  • the present application also provides a battery pack, including a box body 10 and the above-mentioned battery cell assembly, and the battery cell assembly is located in the box body 10 .
  • the box body 10 includes a bottom case 11 and an upper cover 80 connected to the upper end of the bottom case 11.
  • the bottom case 11 may be a rectangular box body, and a pair of terminals 81 are connected to the upper cover 80, respectively connected to copper
  • one of the pair of terminals 81 is a positive terminal, and the other is a negative terminal, and the pair of terminals 81 becomes the output interface of the battery.
  • the bottom case 11 and the upper cover 80 can be made of plastic material, so as to play the role of insulation protection.
  • the upper end of the bracket 30 abuts against the lug frame plate 50 to play a supporting role.
  • the present application also provides a battery pack.
  • the ear frame plate 50 is connected to the cell assembly.
  • the ear frame plate 50 can be made of plastic material.
  • the battery management system, the battery management system is the control system of the battery pack, which monitors the use status of the battery pack.
  • the upper cover 80 is covered on the insulating plate 70 , and the upper cover 80 is connected to the upper end of the bottom case 11 .
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Become one; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can make the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection or a detachable connection, or Become one; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can make the internal communication of two components or the interaction relationship between two components.
  • a first feature being “on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

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Abstract

本申请提供一种电芯总成及电池包。其中，本申请提供的一种电芯总成，包括：支架和相互电连接的若干个电芯模组，所述支架设置在相邻的两个所述电芯模组之间，所述电芯模组包括并排设置的多个单体电芯，多个所述单体电芯相互电连接。本申请提供一种电芯总成及电池包，可以替代铅酸电池的电池，满足为汽车启停系统供电的使用需求。

Description

一种电芯总成及电池包
本申请要求于2021年12月29日提交中国专利局、申请号为202123392781.8、申请名称为“一种电芯总成及电池包”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，尤其涉及一种电芯总成及电池包。
背景技术
随着汽车越来越普及，市场对汽车的性能越来越关注。汽车普遍具有启停功能，汽车起步发动机在启动或等红绿灯时，都需要蓄电池供电，保证发动机的正常启动以及车载用电器的工作，汽车启停用电池需要在短时间内提供较大的电流,而且需要具备反复多次充电功能。
传统的汽车启停通常采用铅酸电池供电，铅酸电池是一种电极主要由铅及其氧化物制成，电解液是硫酸溶液的电池，铅酸电池技术工艺已经十分成熟，但考虑到环保的因素，欧美许多国家开始禁铅,制约着铅酸电池作为汽车启停用电池的进一步发展，此外，铅酸电池的能量密度低，也存在着大电流充放电寿命短的缺陷。
因此，急需发展一种可以替代铅酸电池的电池，并且能够满足汽车启停的使用需求。
实用新型内容
本申请提供一种电芯总成及电池包，可以替代铅酸电池的电池，满足为汽车启停系统供电的使用需求。
为了实现上述目的，本申请提供一种电芯总成，包括：支架和相互电连接的若干个电芯模组，所述支架设置在相邻的两个所述电芯模组之间，所述电芯模组包括并排设置的多个单体电芯，多个所述单体电芯相互电连接。
本申请提供的一种电芯总成，为汽车启停的供电提供了一种新思路，可代替铅酸电池，满足为汽车启停系统供电的使用需求，顺应时代的发展趋势，本申请提供的一种电芯总成，多个所述单体电芯相互电连接，若干个所述电芯模组相互电连接，模块化的生产方式可以是根据使用需求灵活配置所述电芯模组的数量，能够满足汽车启停的供电需求，并且还具有集成化程度高，便于自动化生产，产品一致性、可靠性更高的优势。
在一种可能实施的方式中，所述支架的高度比所述单体电芯的高度低7mm～10mm；
所述支架的高度为133mm～140mm。
在一种可能实施的方式中，还包括防护框，所述防护框包裹在所述若干个电芯模组的外侧，且所述防护框的内壁与所述若干个电芯模组之间通过粘结剂粘结。
在一种可能实施的方式中，还包括缓冲件，所述电芯模组与所述支架之间、所述电芯模组与所述防护框之间、以及相邻两个所述单体电芯之间均设置所述缓冲件。
在一种可能实施的方式中，所述缓冲件的压缩距离大于所述电芯模组的膨胀距离。
在一种可能实施的方式中，所述缓冲件为泡棉，所述泡棉的厚度为1.5mm～3mm。
在一种可能实施的方式中，所述支架为铝支架；和/或
所述支架内部为中空结构；和/或
所述支架的厚度为5mm～8mm。
在一种可能实施的方式中，所述防护框包括相互连接的若干个端板，所述端板面向对应的所述缓冲件的表面具有加强筋。
在一种可能实施的方式中，所述端板上还开设有开孔。
在一种可能实施的方式中，多个所述单体电芯通过引线排相互串联连接，所述若干个电芯模组通过引线排相互串联连接。
本申请还提供一种电池包，包括箱体和上述的电芯总成，所述电芯总成位于所述箱体内。
本申请提供的电芯总成及电池包，相邻的两个所述电芯模组之间设置所 述支架，并且通过所述支架能够起到支撑和固定所述电芯模组的作用，可以有效减轻所述电芯模组的震荡。
本申请提供的电芯总成及电池包，所述支架内部为中空结构，所述支架设置有多个减重孔，用于减轻所述支架的重量，从而可以减轻电芯总成的重量。
本申请提供的电芯总成及电池包，考虑到在充放电过程中，所述单体电芯发热会稍稍膨胀，导致所述电芯模组整体的体积增大，设置所述缓冲件可以为所述单体电芯之间的膨胀留出安全的距离，提高使用安全性。
除了上面所描述的本申请实施例解决的技术问题、构成技术方案的技术特征以及由这些技术方案的技术特征所带来的有益效果外，本申请实施例提供的一种电芯总成及电池包所能解决的其他技术问题、技术方案中包含的其他技术特征以及这些技术特征带来的有益效果，将在具体实施方式中作进一步详细的说明。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作以简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的电芯总成的分解结构示意图；
图2为本申请实施例提供的电芯总成的又一分解结构示意图；
图3为本申请实施例提供的电芯总成的立体结构示意图；
图4为本申请实施例提供的电池包的分解结构示意图；
图5为本申请实施例提供的电池包的立体结构示意图；
图6为本申请实施例提供的电芯总成的又一立体结构示意图；
图7为本申请实施例提供的电芯总成的图3的俯视图；
图8为本申请实施例提供的电芯总成的图3的主视图；
图9为本申请实施例提供的电芯总成的图3的左视图；
图10为本申请实施例提供的电芯总成的图3的右视图；
图11为本申请实施例提供的电芯总成的图3的仰视图；
图12为本申请实施例提供的电芯总成的正面端板的主视图；
图13为本申请实施例提供的电芯总成的正面端板的立体结构示意图；
图14为本申请实施例提供的电芯总成的正面端板的右视图；
图15为本申请实施例提供的电芯总成的正面端板的俯视视图；
图16为本申请实施例提供的电芯总成的第一侧面端板或第二侧面端板的主视图；
图17为本申请实施例提供的电芯总成的第一侧面端板或第二侧面端板的立体结构示意图；
图18为本申请实施例提供的电芯总成的第一侧面端板或第二侧面端板的左视图；
图19为本申请实施例提供的电芯总成的第一侧面端板或第二侧面端板的俯视图；
图20为本申请实施例提供的电芯总成的支架的立体结构示意图；
图21为本申请实施例提供的电芯总成的支架的主视图；
图22为本申请实施例提供的电芯总成的支架的俯视图；
图23为本申请实施例提供的电芯总成的支架的右视图。
附图标记说明：
10-箱体；
11-底壳；
20-电芯模组；
21-单体电芯；
22-缓冲件；
211-第一极耳；
212-第二极耳；
30-支架；
31-减重孔；
40-防护框；
41-端板；
411-正面端板；
4111-第一翻边；
4112-第二翻边；
412-背面端板；
4121-第三翻边；
4122-第四翻边；
4123-第五翻边；
413-第一侧面端板；
414-第二侧面端板；
4141-第六翻边；
415-底面端板；
4151-第七翻边；
50-极耳架板；
416-开孔；
60-引线排；
417-加强筋；
70-绝缘板；
80-上盖；
81-端子。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请中的附图，对本申请中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，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，都属于本申请保护的范围。
相比于普通蓄电池，汽车启停使用的电池要在发动机启动时立即响应，需要有更高容量以满足发动机停机和车内用电器的工作使用，还需具备良好的深度放电性能，要满足汽车启停系统短时间内频繁大电流放电的使用需求。汽车启停通常采用铅酸电池供电，随着欧美多个国家顺应国际禁铅的大趋势，对铅酸电池的发展形成阻碍，因此需要寻求新的电池来替代铅酸电池，满足汽车启停的供电需求。
鉴于上述背景，本申请提供的电芯总成，若干个电芯模组相互电连接的结构，使得本申请提供一种电芯总成，可以便于实现模块化生产，根据使用需求灵活配置电芯模组的数量，能够满足在短时间内提供较大的电流供电需求，满足汽车启停的供电需求。
下面参考附图描述本申请实施例提供的电芯总成及电池包。
参考图1和图2所示，本申请提供一种电芯总成，包括：支架30和相互电连接的若干个电芯模组20，支架30设置在相邻的两个电芯模组20之间，电芯模组20包括并排设置的多个单体电芯21，多个单体电芯21相互电连接。
本申请提供的一种电芯总成，为汽车启停的供电提供了一种新思路，可代替铅酸电池为汽车启停系统供电，顺应时代的发展趋势，本申请提供的一种电芯总成由于多个单体电芯21相互电连接，若干个电芯模组20相互电连接，模块化的生产方式可以是根据使用需求灵活配置电芯模组20的数量，能够满足在短时间内提供较大的电流供电需求，满足汽车启停的供电需求，并且还具有集成化程度高，便于自动化生产，产品一致性、可靠性更高的优势。
此外，考虑到电芯总成中间位置最为薄弱，本申请提供的一种电芯总成，相邻的两个电芯模组20之间设置支架30，并且通过支架30能够起到支撑和固定电芯模组20的作用，可以有效减轻电芯模组20的震荡。
在一种可能实施的方式中，若干个电芯模组20相互电连接，可以是若干个电芯模组20以相互串联的方式连接。在另一种可能实施的方式中，也可以是若干个电芯模组20以相互并联的方式连接，或者串联和并联并存的方式连接。
在一种可能实施的方式中，多个单体电芯21相互电连接，可以是多个单体电芯21以相互串联的方式连接。在另一种可能实施的方式中，也可以是多个单体电芯21以相互并联的方式连接，或者串联和并联并存的方式连接。
在一种可能实施的方式中，参考图2和图3所示，多个单体电芯21通过引线排60相互串联连接，若干个电芯模组20通过引线排60相互串联连接。若干个电芯模组20通过引线排60串联连接，单体电芯21的上端具有第一极耳211和第二极耳212，第一极耳211和第二极耳212被折弯后，通过多个引线排60依次串联单体电芯21的第一极耳211和另一个单体电芯21的第二极耳212，实现多个单体电芯21的串联。
在一种可能实施的方式中，引线排60可以为铜排或铝排。
在一种可能实施的方式中，单体电芯21为锂离子电芯。
单体电芯21可以包括正极片、负极片以及间隔在相邻的正极片和负极片之间的隔膜层叠之后依次堆叠，隔膜防止正极片和负极片接触而短路，此外隔膜还具有能使电解液中的电解质离子通过的功能。
参考图6和图7所示，单体电芯21的上端具有第一极耳211和第二极耳212，第一极耳211和第二极耳212其中的一个为正极耳，第一极耳211和第二极耳212其中的另一个为负极耳，正极耳与正极片电连接，负极耳与负极片电连接。
在一种可能实施的方式中，支架30的高度比单体电芯21的高度低7mm～10mm；这样可以确保支架30与单体电芯21之间有一定的高度差，避免支架30接触到单体电芯21上的第一极耳211和第二极耳212，提高使用安全性。
在一种可能实施的方式中，支架30的高度比单体电芯21的高度低7mm、8,mm、9mm或10mm。
在一种可能实施的方式中，参考图2所示，本实施例提供的一种电芯总成还包括缓冲件22，电芯模组20与支架30之间、电芯模组20与防护框40之间、以及相邻两个单体电芯21之间均设置缓冲件22。
在一种可能实施的方式中，缓冲件22的压缩距离大于电芯模组20的膨胀距离。在充放电过程中，单体电芯21发热会稍稍膨胀，导致电芯模组20整体的体积增大，设置缓冲件22可以为单体电芯21之间的膨胀留出安全的距离，提高使用安全性。
在一种可能实施的方式中，缓冲件22为泡棉，泡棉的压缩量为60％。
在一种可能实施的方式中，泡棉的厚度为1.5mm～3mm。
在一种可能实施的方式中，泡棉的厚度为1.5mm、2mm、2.5mm或3mm。
在一种可能实施的方式中，参考图20和图23所示，支架30的高度H可以为133mm～140mm。
在一种可能实施的方式中，支架30的高度H可以为133mm、135mm、138mm或140mm。
在一种可能实施的方式中，支架30为铝支架，参考图20和图21所示，支架30的厚度T为5mm～8mm。
支架30的厚度不能太薄或太厚，例如支架30的厚度T可以为5mm、6mm、7mm或8mm。
在一种可能实施的方式中，参考图20和图22所示，支架30内部为中空结构，支架30内设置有多个减重孔31，用于减轻支架30的重量，从而可以减轻电芯总成的重量。减重孔31可以为圆形孔，也可以为腰形孔，当然，减重孔31也可以为其他形状，能够减轻支架30的重量即可，此处不作具体限制。
在一种可能实施的方式中，参考图2和图3所示，本实施例提供的一种电芯总成，还包括防护框40，防护框40包裹在若干个电芯模组20的外侧，且防护框40的内壁与若干个电芯模组20之间通过粘结剂粘结。防护框40使若干个电芯模组20稳固固定在一起，既固定了电芯模组20，又可以增强电芯模组20的抗震荡能力。
在一种可能实施的方式中，参考图1和图2所示，防护框40包括相互连接的若干个端板41，端板41面向对应的缓冲件22的表面具有加强筋417；参考图8、图9和图10所示，加强筋417可以为若干个纵向凸起和若干个横向凸起交错的结构，纵向凸起和若干个横向凸起的个数可以根据使用需要灵活设置，可以相同也可以不同。
在一种可能实施的方式中，加强筋417的长度为电芯总成的长度的80％～95％，加强筋417的高度为单体电芯21的高度的70％～90％。例如，加强筋417的长度可以为电芯总成的长度的80％、90％或95％，加强筋417的高度可以为单体电芯21的高度的70％、80％或90％。
在一种可能实施的方式中，参考图1和图2所示，若干个端板41为正面端板411、第一侧面端板413、背面端板412和第二侧面端板414，即，防护框40包括依次首尾相接的正面端板411、第一侧面端板413、背面端板412和第二侧面端板414。其中，参考图1和图13所示，正面端板411的两端分别具有第一翻边4111和第二翻边4112，背面端板412的两端分别具有第三翻边4121和第四翻边4122，第一侧面端板413面向电芯模组20的一面与第一翻边4111和第三翻边4121抵接，第二侧面端板414面向电芯模组20的一面与第二翻边4112和第四翻边4122相抵接。
在一种可能实施的方式中，第一侧面端板413可以是通过螺钉或铆钉与 第一翻边4111和第三翻边4121连接，第一翻边4111和第三翻边4121上开设有用于固定螺钉或铆钉的开口槽，第二侧面端板414可以是通过螺钉或铆钉与第二翻边4112和第四翻边4122连接，第二翻边4112和第四翻边4122上开设有用于固定螺钉或铆钉的开口槽。
在一种可能实施的方式中，参考图2和图11所示，防护框40还包括底面端板415，底面端板415位于电芯模组20的底部，即底面端板415与引线排60分别位于电芯模组20相对的两端，参考图13和图14所示，正面端板411和背面端板412的底部均具有第五翻边4123，参考图2和图11所示，底面端板415分别与第五翻边4123相连接，底面端板415的两侧通过螺钉或铆钉分别与背面端板412的第五翻边4123和正面端板411的第五翻边4123连接。参考图11和图15所示，第五翻边4123上开设有螺钉孔，便于连接螺钉或铆钉。
参考图16和图17所示，第一侧面端板413和第二侧面端板414背向底面端板415的一端均一体连接第六翻边4141，参考,4和图17所示，第六翻边4141用于与极耳架板50连接，极耳架板50上连接有绝缘板70。参考图18和图19所示，第六翻边4141可以为与第一侧面端板413或第二侧面端板414垂直。
在一种可能实施的方式中，参考图2所示，底面端板415的两端还均具有第七翻边4151，参考图2和图4所示，底面端板415两端的第七翻边4151分别通过螺钉与第一侧面端板413和第二侧面端板414连接。
参考图1和图6所示，电芯模组20与防护框40之间设置缓冲件22，即，电芯模组20面向正面端板411的面与正面端板411之间设置缓冲件22，电芯模组20面向第一侧面端板413的面与第一侧面端板413之间设置缓冲件22，电芯模组20面向背面端板412的面与背面端板412之间设置缓冲件22，电芯模组20面向第二侧面端板414的面第二侧面端板414之间设置缓冲件22，电芯模组20面向底面端板415的面与底面端板415之间也设置缓冲件22。
在一种可能实施的方式中，参考图2和图12所示，端板41上还开设有开孔416。开孔416用于在端板41背向电芯模组20的一面向端板41面向电芯模组20的一面注入粘结剂，使得电芯模组20与端板41通过粘结剂粘结。
在一种可能实施的方式中，可以是在正面端板411和背面端板412上开设有开孔416，开孔416的个数可以根据使用需要灵活选择，此处不做具体限定。
在一种可能实施的方式中，粘结剂可以为胶水。
本申请提供的一种电芯总成，由于包括相互电连接的若干个电芯模组20，电芯模组20包括相互电连接的多个单体电芯21，模块化的生产可降低零部件采购成本、组装的人工成本，简化了生产工艺，提高了电芯总成的生产效率。
参考图4和图5所示，本申请还提供一种电池包，包括箱体10和上述的电芯总成，电芯总成位于箱体10内。
在一种可能实施的方式中，箱体10包括底壳11和连接在底壳11上端的上盖80，底壳11可以为矩形箱体，上盖80上连接有一对端子81，分别与铜排电连接，一对端子81其中的一个为正端子，另一个为负端子，一对端子81成为电池的输出接口。底壳11和上盖80可以为塑料材质，起到绝缘防护的效果。
在一种可能实施的方式中，支架30的上端与极耳架板50相抵接，起到支撑的作用。
本申请还提供一种电池包，极耳架板50连接在电芯总成上，极耳架板50可以为塑胶材质的板，极耳架板50上连接绝缘板70,绝缘板70内设置电池管理系统，电池管理系统为电池包的控制系统，监控电池包的使用状态，上盖80罩在绝缘板70上，上盖80与底壳11上端连接。
这里需要说明的是，本申请涉及的数值和数值范围为近似值，受制造工艺的影响，可能会存在一定范围的误差，这部分误差本领域技术人员可以认为忽略不计。
在本申请的描述中，需要理解的是，所使用的术语“中心”、“长度”、“宽度”、“厚度”、“顶端”、“底端”、“上”、“下”、“左”、“右”、“前”、“后”、“竖直”、“水平”、“内”、“外”“轴向”、“周向”等指示方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的位置或原件必须具有特定的方位、以特定的构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个、三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等应做广义理解，例如可以是固定连接，也可以是可拆卸连接，或成为一体；可以是机械连接，也可以是电连接或者可以互相通讯；可以是直接相连，也可以通过中间媒介间接相连，可以使两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (11)

  1. 一种电芯总成，其特征在于，包括：支架(30)和相互电连接的若干个电芯模组(20)，所述支架(30)设置在相邻的两个所述电芯模组(20)之间，所述电芯模组(20)包括并排设置的多个单体电芯(21)，多个所述单体电芯(21)相互电连接。
  2. 根据权利要求1所述的电芯总成，其特征在于，所述支架(30)的高度比所述单体电芯(21)的高度低7mm～10mm；
    所述支架(30)的高度为133mm～140mm。
  3. 根据权利要求1所述的电芯总成，其特征在于，还包括防护框(40)，所述防护框(40)包裹在所述若干个电芯模组(20)的外侧，且所述防护框(40)的内壁与所述若干个电芯模组(20)之间通过粘结剂粘结。
  4. 根据权利要求3所述的电芯总成，其特征在于，还包括缓冲件(22)，所述电芯模组(20)与所述支架(30)之间、所述电芯模组(20)与所述防护框(40)之间、以及相邻两个所述单体电芯(21)之间均设置所述缓冲件(22)。
  5. 根据权利要求4所述的电芯总成，其特征在于，所述缓冲件(22)的压缩距离大于所述电芯模组(20)的膨胀距离。
  6. 根据权利要求5所述的电芯总成，其特征在于，所述缓冲件(22)为泡棉，所述泡棉的厚度为1.5mm～3mm。
  7. 根据权利要求1-6任一所述的电芯总成，其特征在于，所述支架(30)为铝支架；和/或
    所述支架(30)内部为中空结构；和/或
    所述支架(30)的厚度为5mm～8mm。
  8. 根据权利要求4所述的电芯总成，其特征在于，所述防护框(40)包括相互连接的若干个端板(41)，所述端板(41)面向对应的所述缓冲件(22)的表面具有加强筋(417)。
  9. 根据权利要求8所述的电芯总成，其特征在于，所述端板(41)上还开设有开孔(416)。
  10. 根据权利要求1所述的电芯总成，其特征在于，多个所述单体电芯 (21)通过引线排(60)相互串联连接，所述若干个电芯模组(20)通过引线排(60)相互串联连接。
  11. 一种电池包，其特征在于，包括箱体(10)和权利要求1-9任一项所述的电芯总成，所述电芯总成位于所述箱体(10)内。
PCT/CN2022/139545 2021-12-29 2022-12-16 一种电芯总成及电池包 WO2023125069A1 (zh)

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