WO2024078047A1 - 电池包和车辆 - Google Patents

电池包和车辆 Download PDF

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Publication number
WO2024078047A1
WO2024078047A1 PCT/CN2023/104468 CN2023104468W WO2024078047A1 WO 2024078047 A1 WO2024078047 A1 WO 2024078047A1 CN 2023104468 W CN2023104468 W CN 2023104468W WO 2024078047 A1 WO2024078047 A1 WO 2024078047A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid cooling
plate
cooling plate
side beam
channel
Prior art date
Application number
PCT/CN2023/104468
Other languages
English (en)
French (fr)
Inventor
李建强
万龙
韦成峰
旷刚
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2024078047A1 publication Critical patent/WO2024078047A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
    • 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
    • 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 embodiments of the present application relate to the technical field of battery packs, and more specifically, to a battery pack and a vehicle.
  • the power battery system is generally composed of battery modules, battery management system BMS, thermal management system, and some electrical and mechanical systems.
  • the power battery system on electric vehicles is composed of multiple battery cells. During operation, the power battery system generates a large amount of heat that accumulates in the narrow battery box. If the heat cannot be dissipated quickly and in time, the high temperature will affect the life of the power battery and even cause thermal runaway.
  • the purpose of this application is to provide a new technical solution for battery packs and vehicles.
  • the present application provides a battery pack.
  • the battery pack comprises:
  • a pallet wherein the pallet comprises a pallet bottom plate and a pallet side beam, wherein the pallet bottom plate and the pallet side beam are connected to form a containing space;
  • a battery cell module the battery cell module is located in the accommodating space, the battery cell module includes a plurality of battery cells, and each of the battery cells has a first explosion-proof valve;
  • a liquid cooling plate the liquid cooling plate is located between the battery cell module and the tray bottom plate and is arranged on the tray bottom plate, the liquid cooling plate has a first surface and a second surface, and a plurality of through holes are opened on the liquid cooling plate, each of the through holes passes through the first surface and the second surface;
  • the battery cell module is in contact with the first surface, and the first explosion-proof valve of the battery cell is opposite to the through hole;
  • a first channel is formed between the second surface of the liquid cooling plate and the bottom plate of the tray, and a The first channel and the second channel are connected so that the smoke generated by the battery cell module flows to the second channel.
  • the battery cell comprises a battery cell shell and a cover plate, the cover plate is arranged on the battery cell shell; a first area and a second area are formed on the cover plate, the first area is recessed relative to the second area, a battery cell pole is arranged in the first area, and the first explosion-proof valve is arranged in the second area;
  • the battery cell module is arranged on the liquid cooling plate, and there is a gap between the battery cell pole and the first surface of the liquid cooling plate.
  • a second explosion-proof valve is provided on a side of the pallet side beam facing away from the accommodating space, and the second channel is connected to the second explosion-proof valve.
  • the liquid cooling plate comprises an upper plate of the liquid cooling plate and a lower plate of the liquid cooling plate, and the upper plate of the liquid cooling plate and the lower plate of the liquid cooling plate are connected;
  • the upper plate of the liquid cooling plate is in contact with the battery cell module
  • a plurality of convex ribs arranged at intervals are formed on the lower plate of the liquid cooling plate, and grooves are formed between adjacent convex ribs; the grooves, the tray bottom plate and the convex ribs define the first channel.
  • the pallet side beam includes a first sub-side beam, a second sub-side beam and a connecting plate, the first sub-side beam and the second sub-side beam are arranged opposite to each other, the connecting plate is arranged opposite to the pallet bottom plate, one end of the connecting plate is connected to the first sub-side beam, and the other end of the connecting plate is connected to the second sub-side beam, and the first sub-side beam, the second sub-side beam, the connecting plate and the pallet bottom plate enclose the second channel.
  • the first sub-side beam is arranged closer to the accommodating space relative to the second sub-side beam, an installation gap is formed between the first sub-side beam and the tray bottom plate, the liquid cooling plate is arranged on the tray bottom plate, and the edge of the liquid cooling plate passes through the installation gap and is located in the second channel, so that the first channel and the second channel are connected.
  • the liquid cooling plate comprises a liquid cooling plate body and a cooling plate interface, and the liquid cooling plate body is formed with a bearing portion;
  • the tray side beam is provided with a slit, the bearing portion passes through the slit and extends out of the accommodating space, and the cold plate interface is arranged on the bearing portion.
  • a first channel formed by the liquid cooling plate and the tray bottom plate is arranged along a first direction of the battery pack, and tray side beams formed with the second channels are arranged at intervals in the first direction of the battery pack.
  • the battery pack further comprises a sealing cover, and the sealing cover is disposed on the tray.
  • a vehicle comprising the battery pack as described in the first aspect.
  • a battery pack in an embodiment of the present application, includes a tray, a liquid cooling plate and a battery module, wherein the liquid cooling plate is located between the battery module and the tray, wherein a first explosion-proof valve provided on a battery in the battery module is opposite to a through hole provided on the liquid cooling plate, and when thermal runaway occurs in the battery, the high-temperature smoke generated passes through the through hole corresponding thereto and is discharged into a first channel formed by the second surface of the liquid cooling plate and the bottom plate of the tray, and since the first channel and the second channel are connected, the generated The high-temperature flue gas can flow along the first channel to the second channel and be discharged through the side beams of the tray, thereby avoiding the accumulation of a large amount of high-temperature flue gas in the battery pack, which further affects the safety of the battery pack.
  • FIG1 is a schematic diagram showing the structure of a battery pack.
  • FIG. 2 is a schematic diagram showing the exploded structure of a battery pack.
  • FIG. 3 is a schematic diagram showing the structure of a battery cell module arranged on a liquid cooling plate.
  • FIG4 is a schematic diagram showing the structure of a liquid cooling plate.
  • FIG. 5 is a partial structural schematic diagram of a battery pack.
  • FIG6 is a schematic diagram showing the structure of a battery cell.
  • FIG. 7 shows a second schematic diagram of a partial structure of a battery pack.
  • Battery cell module 21. Battery cell; 211. Battery cell housing; 212. Cover plate; 213. First explosion-proof valve; 214. Battery cell pole;
  • Liquid cooling plate 31. First surface; 32. Second surface; 33. Through hole; 34. Liquid cooling plate upper plate; 35. Liquid cooling plate lower plate; 351. Raised rib; 352. Groove; 30. Liquid cooling plate body; 36. Cold plate interface; 301. Load-bearing part;
  • an embodiment of the present application provides a battery pack.
  • the battery pack includes a tray 1 , a battery cell module 2 , and a liquid cooling plate 3 .
  • the pallet 1 includes a pallet bottom plate 11 and a pallet side beam 12 , and the pallet bottom plate 11 and the pallet side beam 12 are connected to form a containing space.
  • the battery module 2 is located in the accommodating space, and the battery module 2 includes a plurality of battery cells 21, and each of the battery cells 21 has a first explosion-proof valve 213;
  • the liquid cooling plate 3 is located between the battery cell module 2 and the tray bottom plate 11 and is disposed on the tray bottom plate 11.
  • the liquid cooling plate 3 has a first surface 31 and a second surface 32.
  • a plurality of through holes 33 are formed on the liquid cooling plate 3. Each of the through holes 33 passes through the first surface 31 and the second surface 32.
  • the battery cell module 2 is in contact with the first surface 31 , and the first explosion-proof valve 213 of the battery cell 21 is opposite to the through hole 33 .
  • a first channel 41 is formed between the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11 , and a second channel 42 is formed in the tray side beam 12 .
  • the first channel 41 and the second channel 42 are connected so that the smoke generated by the battery cell module 2 flows to the second channel 42 .
  • the battery pack mainly includes a tray 1 , a battery cell module 2 and a liquid cooling plate 3 , wherein the tray 1 is used to carry the battery cell module 2 and the liquid cooling plate 3 .
  • the pallet 1 includes a pallet bottom plate 11 and a pallet side beam 12, wherein the pallet bottom plate 11 and the pallet side beam 12 are connected together to enclose a receiving space.
  • the pallet bottom plate 11 and the pallet side beam 12 can be welded together.
  • the pallet side beam 12 includes a first side beam 121, a second side beam 122, a third side beam 123 and a fourth side beam 124, and the first side beam 121, the second side beam 122, the third side beam 123 and the fourth side beam 124 are all connected to the pallet bottom plate 11 to enclose a receiving space.
  • the battery cell module 2 and the liquid cooling plate 3 are both arranged in the accommodation space, wherein the liquid cooling plate 3 is located between the battery cell module 2 and the tray bottom plate 11.
  • the battery cell module 2 includes a plurality of battery cells 21, each of which has a first explosion-proof valve 213, and the surface of the battery cell 21 on which the first explosion-proof valve 213 is arranged is arranged toward the liquid cooling plate 3, that is, each of the battery cells 21 in the battery cell module 2 is arranged upside down in the tray 1.
  • the liquid cooling plate 3 has a first surface 31 and a second surface 32, wherein the first surface 31 is away from the support
  • the tray bottom plate 11 is provided, and the second surface 32 is provided toward the tray bottom plate 11.
  • the liquid cooling plate 3 is provided on the tray bottom plate 11, and is located between the tray bottom plate 11 and the battery cell module 2, for example, the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11 are fixedly installed together by using a structural adhesive.
  • the battery cell module 2 is provided on the first surface 31 of the liquid cooling plate 3, for example, the battery cell module 2 and the first surface 31 of the liquid cooling plate 3 are fixedly installed together by using a thermal conductive structural adhesive.
  • a through hole 33 is provided on the liquid cooling plate 3, and the through hole 33 penetrates the first surface 31 and the second surface 32 of the liquid cooling plate 3, that is, in the thickness direction of the liquid cooling plate 3, the through hole 33 penetrates the liquid cooling plate 3.
  • the battery cell 21 in the battery cell module 2 is arranged on the first surface 31 of the liquid cooling plate 3, and the first explosion-proof valve 213 arranged on the battery cell 21 is opposite to the through hole 33 of the liquid cooling plate 3.
  • the battery cell module 2 is arranged on the liquid cooling plate 3, and the first explosion-proof valve 213 can be embedded in the through hole 33, or the first explosion-proof valve 213 is not directly arranged in the through hole 33, but in terms of position, the first explosion-proof valve 213 corresponds to the through hole 33, that is, the first explosion-proof valve 213 is connected to the through hole 33.
  • the first explosion-proof valve 213 arranged on the battery cell 21 is opposite to the through hole 33 of the liquid cooling plate 3.
  • the high-temperature flue gas generated by the battery cell 21 can be discharged through the through hole 33 opened on the liquid cooling plate 3.
  • the first explosion-proof valve 213 provided on the battery cell 21 is opposite to the through hole 33 of the liquid cooling plate 3.
  • the battery cell module 2 includes a plurality of battery cells 21, each of which is provided with a first explosion-proof valve 213.
  • a plurality of through holes 33 are also provided on the liquid cooling plate 3, wherein the first explosion-proof valve 213 corresponds to the through hole 33 one by one.
  • the battery cells 21 in the battery cell module 2 are arranged in four rows and fifteen columns, and correspondingly, four rows and fifteen columns of through holes 33 are also provided on the liquid cooling plate 3.
  • a mounting hole is provided near each through hole 33, and for example, the liquid cooling plate 3 can be fixed to the tray bottom plate 11 by fasteners.
  • the liquid cooling plate 3 is disposed on the tray bottom plate 11, and a first channel 41 is formed between the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11.
  • a second channel 42 is formed in the tray side beam 12, and the first channel 41 and the second channel 42 are connected.
  • the high-temperature flue gas generated is discharged into the first channel 41 formed by the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11 through the corresponding through hole 33. Since the first channel 41 and the second channel 42 are connected, the high-temperature flue gas generated can flow along the first channel 41 to the second channel 42, and the high-temperature flue gas can be discharged through the tray side beam 12.
  • a battery pack which includes a tray 1, a liquid cooling plate 3 and a battery module 2, wherein the liquid cooling plate 3 is located between the battery module 2 and the tray 1, wherein the first explosion-proof valve 213 provided on the battery cell 21 in the battery module 2 is opposite to the through hole 33 provided on the liquid cooling plate 3, and when the battery cell 21 has thermal runaway, the high-temperature flue gas generated is discharged into the first channel 41 formed by the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11 through the through hole 33 corresponding thereto, and since the first channel 41 and the second channel 42 are connected, the high-temperature flue gas generated can flow along the first channel 41 to The second channel 42 discharges the high-temperature smoke through the tray side beam 12, thereby preventing a large amount of high-temperature smoke from accumulating in the battery pack, which would further affect the safety of the battery pack.
  • the first channel 41 is formed by the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11, when the high-temperature flue gas ejected from the battery cell 21 through the first explosion-proof valve 213 is blocked by the liquid cooling plate 3 on the outside of the battery cell module 2, the impact of the high-temperature flue gas on other battery cells 21 is reduced; in addition, when the high-temperature flue gas flows to the second channel 42 through the first channel 41, the high-temperature flue gas is gradually cooled by the liquid cooling plate 3 during the process of being discharged to the outside, and the harm caused by the high-temperature flue gas to the battery pack is gradually reduced, which can ensure the safety of the battery pack to a certain extent.
  • the battery cell 21 includes a battery cell housing 211 and a cover plate 212, wherein the cover plate 212 is covered on the battery cell housing 211; a first area and a second area are formed on the cover plate 212, wherein the first area is recessed relative to the second area, a battery cell pole 214 is disposed in the first area, and the first explosion-proof valve 213 is disposed in the second area;
  • the battery cell module 2 is disposed on the liquid cooling plate 3 , and a gap exists between the battery cell pole 214 and the first surface 31 of the liquid cooling plate 3 .
  • the battery cell 21 includes a battery cell housing 211 and a cover plate 212, and the cover plate 212 is covered on the battery cell housing 211.
  • the battery cell module 2 is arranged on the liquid cooling plate 3, and the battery cell module 2 is in contact with the first surface 31 of the liquid cooling plate 3, that is, the cover plate 212 of the battery cell 21 is arranged toward the liquid cooling plate 3, and the cover plate 212 is in contact with the first surface 31 of the liquid cooling plate 3.
  • the liquid cooling plate 3 can cool the cover plate 212 and cool the pole arranged on the cover plate 212.
  • a first area and a second area are formed on the cover plate 212, the first area is recessed relative to the second area, a cell pole 214 is arranged in the first area, and a first explosion-proof valve 213 is arranged in the second area, so the arrangement position of the cell pole 214 is lower than the arrangement position of the first explosion-proof valve 213.
  • the cell module 2 is arranged on the liquid cooling plate 3 and the cell module 2 is in contact with the first surface 31 of the liquid cooling plate 3, there is a gap between the cell pole 214 and the first surface 31 of the liquid cooling plate 3, so as to avoid the cell pole 214 from contacting with the liquid cooling plate 3 (metal material) and affecting the electrical connection of the cell 21, for example, short circuit can be avoided.
  • two first regions are formed on the cover plate 212, and the second region is located between the two regions.
  • a corresponding battery pole 214 is arranged on each first region.
  • the battery pole 214 includes a positive pole and a negative pole, wherein the positive pole can be arranged in the first region on the right, and the negative pole can be arranged in the first region on the left.
  • two first regions are formed on the cover plate 212, the two first regions are arranged adjacent to each other, and the second region is located on one side of one of the first regions.
  • a first region and a second region are formed on the cover plate 212, and two battery poles 214 are arranged in the first region.
  • a second explosion-proof valve 125 is provided on a side of the pallet side beam 12 facing away from the accommodating space, and the second channel 42 is in communication with the second explosion-proof valve 125 .
  • a second explosion-proof valve 125 (package explosion-proof valve) is provided on the pallet side beam 12, wherein the second explosion-proof valve 125 is provided away from the accommodation space.
  • a second channel 42 is formed in the pallet side beam 12, and a second channel 42 is formed in the high-temperature smoke exhaust port 110.
  • the second explosion-proof valve 125 can be opened to discharge the high-temperature flue gas in the second channel 42 to the outside of the battery pack through the second explosion-proof valve 125, thereby avoiding the influence of the high-temperature flue gas on the battery cell module 2 in the battery pack.
  • the liquid cooling plate 3 includes a liquid cooling plate upper plate 34 and a liquid cooling plate lower plate 35 , and the liquid cooling plate upper plate 34 and the liquid cooling plate lower plate 35 are connected;
  • the liquid cooling plate upper plate 34 is in contact with the battery cell module 2;
  • a plurality of convex ribs 351 arranged at intervals are formed on the lower plate 35 of the liquid cooling plate, and grooves 352 are formed between adjacent convex ribs 351 ; the grooves 352 , the tray bottom plate 11 and the convex ribs 351 define the first channel 41 .
  • the liquid cooling plate 3 includes a liquid cooling plate upper plate 34 and a liquid cooling plate lower plate 35.
  • the liquid cooling plate upper plate 34 is a temperature equalizing plate
  • the liquid cooling plate lower plate 35 is a flow channel plate.
  • the liquid cooling plate upper plate 34 and the liquid cooling plate lower plate 35 are connected to form the liquid cooling plate 3.
  • the liquid cooling plate upper plate 34 and the liquid cooling plate lower plate 35 can be connected together by brazing.
  • through holes 33 are opened on the liquid cooling plate 3, for example, through holes 33 are opened on both the upper plate 34 and the lower plate 35 of the liquid cooling plate, wherein when the two are welded together, the through holes 33 opened on the upper plate 34 and the lower plate 35 of the liquid cooling plate respectively correspond to each other.
  • the upper plate 34 of the liquid cooling plate is located above the lower plate 35 of the liquid cooling plate.
  • the battery module 2 is in direct contact with the upper plate 34 of the liquid cooling plate.
  • the upper plate 34 of the liquid cooling plate is a flat structure, so that the battery module 2 can be fixed on the upper plate 34 of the liquid cooling plate.
  • a plurality of convex ribs 351 are formed on the lower plate 35 of the liquid cooling plate, for example, a plurality of convex ribs 351 are formed on the lower plate 35 of the liquid cooling plate by stamping or the like.
  • the adjacent convex ribs 351 are arranged at intervals, so that a groove 352 (relative to the convex rib 351) is formed between the adjacent convex ribs 351.
  • the high-temperature flue gas generated can be discharged into the first channel 41 formed by the second surface 32 of the liquid cooling plate 3 and the tray bottom plate 11 through the corresponding through hole 33, so as to cool the high-temperature flue gas through the liquid cooling plate 3.
  • the lower plate 35 of the liquid cooling plate forms five groups of convex ribs, each group of convex ribs includes four convex ribs 351, each convex rib 351 is arranged at intervals, so that a groove 352 is formed between adjacent convex ribs 351; adjacent convex rib groups are also arranged at intervals, so that a groove 352 is also formed between adjacent convex rib groups, wherein the convex ribs 351 extend along the length direction of the tray 1.
  • a through hole 33 is provided in the groove 352 formed between adjacent convex rib groups, so that the through hole 33 can be directly connected to the first channel 41, so that the high-temperature flue gas generated by the battery module 2 can be smoothly discharged to the first channel 41, so that the high-temperature flue gas can be cooled through the liquid cooling plate 3.
  • the pallet side beam 12 includes a first sub-side beam 1211, a second sub-side beam 1212 and a connecting plate 1213, wherein the first sub-side beam 1211 and the second sub-side beam 1212 are arranged opposite to each other.
  • the connecting plate 1213 is arranged opposite to the pallet bottom plate 11, one end of the connecting plate 1213 is connected to the first sub-side beam 1211, and the other end of the connecting plate 1213 is connected to the second sub-side beam 1212, and the first sub-side beam 1211, the second sub-side beam 1212, the connecting plate 1213 and the pallet bottom plate 11 enclose the second channel 42.
  • the second channel 42 formed in the pallet side beam 12 is defined.
  • the pallet side beam 12 can be formed by stamping or other methods, so that the first sub-side beam 1211, the second sub-side beam 1212 and the connecting plate 1213 are integrally formed.
  • the first sub-side beam 1211 and the second sub-side beam 1212 are arranged opposite to each other and spaced apart.
  • the first sub-side beam 1211 and the second sub-side beam 1212 are connected by the connecting plate 1213, so that the first sub-side beam 1211, the second sub-side beam 1212, the connecting plate 1213 and the pallet bottom plate 11 enclose and form the second channel 42.
  • the second channel 42 may be formed on the first side beam 121, the second side beam 122, the third side beam 123 and the fourth side beam 124.
  • the first side beam 121 and the third side beam 123 are arranged relatively to each other in the width direction of the battery pack (i.e., the direction indicated by arrow b), and the second side beam 122 and the third side beam 123 are arranged relatively to each other in the length direction of the battery pack (i.e., the direction indicated by arrow a).
  • the second channel 42 may be formed on the first side beam 121 and the third side beam 123, or may be formed only on the second side beam 122 and the fourth side beam 124. Regardless of which side beam the second channel 42 is formed on, it is necessary to achieve communication between the first channel 41 and the second channel 42. Therefore, the second channel 42 may be selectively formed on the side beam of the tray 1 according to the setting direction of the first channel 41.
  • the first sub-side beam 1211 is disposed closer to the accommodating space than the second sub-side beam 1212 , and an installation gap 1214 is formed between the first sub-side beam 1211 and the tray bottom plate 11 ;
  • the liquid cooling plate 3 is disposed on the tray bottom plate 11 , and an edge of the liquid cooling plate 3 passes through the installation gap 1214 and is located in the second channel 42 , so that the first channel 41 and the second channel 42 are connected.
  • the first sub-side beam 1211 is arranged closer to the accommodating space relative to the second sub-side beam 1212. In the height direction of the battery pack, the height dimension of the first sub-side beam 1211 is smaller than the height dimension of the second sub-side beam 1212.
  • the second sub-side beam 1212 and the tray bottom plate 11 are connected together, and the first sub-side beam 1211 and the tray bottom plate 11 are not connected together.
  • An installation gap 1214 is formed between the first sub-side beam 1211 and the tray bottom plate 11.
  • the edge of the liquid cooling plate 3 can extend into the installation gap 1214, so that the first channel 41 formed between the liquid cooling plate 3 and the tray bottom plate 11 and the second channel 42 formed between the tray side beams 12 are connected, so that the high-temperature flue gas discharged into the first channel 41 can be smoothly discharged to the second channel 42, so as to facilitate the discharge of the high-temperature flue gas outside the battery pack.
  • the liquid cooling plate 3 includes a liquid cooling plate body 30 and a cold plate interface 36 , and the liquid cooling plate body 30 is formed with a bearing portion 301 ;
  • the tray side beam 12 is provided with a slit 126 , the bearing portion 301 passes through the slit 126 and extends out of the accommodating space, and the cold plate interface 36 is disposed on the bearing portion 301 .
  • the tray side beam 12 is provided with a slit 126, wherein in the length direction of the battery pack (i.e., the direction indicated by arrow a), In the direction shown in FIG. 1 , the slit 126 penetrates the tray side beam 12.
  • the bearing portion 301 of the liquid cooling plate body 30 can pass through the slit 126 and be located outside the battery pack.
  • a cold plate interface 36 is provided on the liquid cooling plate body 30 to facilitate the transmission of coolant into the liquid cooling plate 3.
  • the first channel 41 formed by the liquid cooling plate 3 and the tray bottom plate 11 is arranged along the first direction of the battery pack, and the tray side beams 12 formed with the second channel 42 are oppositely and spaced apart in the first direction of the battery pack.
  • the extension direction of the first channel 41 and the relative direction of the pallet side beam 12 on which the second channel 42 is formed are defined, wherein the extension direction of the first channel 41 is consistent with the relative direction of the pallet side beam 12 on which the second channel 42 is formed, and the liquid cooling plate 3 is arranged on the pallet bottom plate 11, and the first channel 41 formed between the liquid cooling plate 3 and the pallet bottom plate 11 can be directly connected to the second channel 42 formed in the pallet side beam 12.
  • the first channel 41 formed between the liquid cooling plate 3 and the tray bottom plate 11 is arranged along the first direction of the battery pack (the length direction of the battery pack), that is, the first channel 41 is extended along the length direction of the battery pack.
  • the second channel 42 is arranged on the second side beam 122 and the fourth side beam 124, wherein the second side beam 122 and the fourth side beam 124 are arranged opposite to each other and spaced apart in the length direction of the battery pack.
  • the liquid cooling plate 3 is arranged on the tray bottom plate 11, and the first channel 41 formed between the liquid cooling plate 3 and the tray bottom plate 11 can be directly connected to the second channel 42 formed in the tray side beam 12.
  • the battery pack further includes a sealing cover 5 , and the sealing cover 5 is disposed on the tray 1 .
  • the battery pack further includes a sealing cover 5 , which is disposed on the tray 1 and can protect the liquid cooling plate 3 and the battery cell module 2 disposed inside the tray 1 .
  • a vehicle comprising the battery pack as described in the first aspect.
  • a vehicle is provided, and the vehicle may be a hybrid vehicle or an electric vehicle.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种车辆，具有电池包，该电池包包括托盘、电芯模组和液冷板，托盘包括托盘底板和托盘侧梁，托盘底板和托盘侧梁连接形成了容置空间；电芯模组位于容置空间内且包括多个电芯，每一个电芯具有第一防爆阀；液冷板位于电芯模组和托盘底板之间且设置在托盘底板上，液冷板上开设有多个通孔，每一个通孔贯穿液冷板的第一表面和第二表面；电芯模组与第一表面接触，且电芯的第一防爆阀与通孔相对；液冷板的第二表面与托盘底板之间形成有第一通道，托盘侧梁内形成有和第一通道连通的第二通道，以使电芯模组产生的烟气流向至第二通道。

Description

电池包和车辆
相关申请的交叉引用
本申请要求申请日为2022年10月13日、申请号为202222704224.3、专利申请名称为“一种电池包和车辆”的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及电池包技术领域，更具体地，本申请实施例涉及一种电池包和车辆。
背景技术
动力电池系统一般主要由电池模组、电池管理系统BMS、热管理系统以及一些电气和机械系统等构成。电动汽车上的动力电池系统是由多个电芯构成，动力电池系统在工作过程中产生大量的热聚集在狭小的电池箱体内，热量如果不能够及时地快速散出，高温会影响动力电池寿命甚至出现热失控等。
目前市面上常见的电池包热失控后，往往通过液冷板内部的冷却液来给电池包灭火，其中当冷却液从液冷板内部释放到电池包内，可能会导致其它正常电芯的短路拉弧，造成更加严重的后果。
因此当电池包发生热失控后，如何将电池包内部的烟气正确排出是亟待解决的技术问题。
发明内容
本申请的目的在于提供一种电池包和车辆的新技术方案。
第一方面，本申请提供了一种电池包。所述电池包包括：
托盘，所述托盘包括托盘底板和托盘侧梁，托盘底板和托盘侧梁连接形成了容置空间；
电芯模组，所述电芯模组位于所述容置空间内，所述电芯模组包括多个电芯，每一个所述电芯具有第一防爆阀；
液冷板，所述液冷板位于所述电芯模组和所述托盘底板之间且设置在所述托盘底板上，所述液冷板具有第一表面和第二表面，所述液冷板上开设有多个通孔，每一个所述通孔贯穿所述第一表面和所述第二表面；
所述电芯模组与所述第一表面接触，且所述电芯的第一防爆阀与所述通孔相对；
所述液冷板的第二表面与所述托盘底板之间形成有第一通道，所述托盘侧梁内形成有 第二通道，所述第一通道和所述第二通道连通，以使所述电芯模组产生的烟气流向至所述第二通道。
可选地，所述电芯包括电芯壳体和盖板，所述盖板盖设在所述电芯壳体上；所述盖板上形成第一区域和第二区域，所述第一区域相对于所述第二区域凹陷设置，所述第一区域内设置有电芯极柱，所述第二区域内设置与所述第一防爆阀；
所述电芯模组设置在所述液冷板上，所述电芯极柱与所述液冷板的第一表面之间存在间隙。
可选地，所述托盘侧梁背离所述容置空间的一侧设置有第二防爆阀，所述第二通道与所述第二防爆阀连通。
可选地，所述液冷板包括液冷板上板和液冷板下板，所述液冷板上板和所述液冷板下板连接；
所述液冷板上板与所述电芯模组接触；
所述液冷板下板上形成有间隔设置的多条凸筋，相邻凸筋之间形成有凹槽；所述凹槽、所述托盘底板和所述凸筋限定出了所述第一通道。
可选地，所述托盘侧梁包括第一子侧梁、第二子侧梁和连接板，所述第一子侧梁和所述第二子侧梁相对设置，所述连接板与所述托盘底板相对设置，所述连接板的一端与所述第一子侧梁连接，所述连接板的另一端与所述第二子侧梁连接，所述第一子侧梁、第二子侧梁、连接板和所述托盘底板围合形成了所述第二通道。
可选地，所述第一子侧梁相对于第二子侧梁更靠近容置空间设置，第一子侧梁与所述托盘底板之间形成有安装缝隙，所述液冷板设置在所述托盘底板上，所述液冷板的边缘部贯穿所述安装缝隙位于所述第二通道内，以使所述第一通道和所述第二通道连通。
可选地，所述液冷板包括液冷板本体和冷板接口，所述液冷板本体形成有承载部；
所述托盘侧梁开设有狭缝，所述承载部贯穿所述狭缝伸出所述容置空间，所述冷板接口设置在所述承载部上。
可选地，所述液冷板与所述托盘底板形成的第一通道沿所述电池包的第一方向设置，并且形成有所述第二通道的托盘侧梁在所述电池包的第一方向上间隔设置。
可选地，所述电池包还包括密封盖，所述密封盖盖设在所述托盘上。
第二方面，提供了一种车辆。所述车辆包括如第一方面所述的电池包。
在本申请实施例中，提供了一种电池包。电池包包括托盘、液冷板和电芯模组，其中液冷板位于电芯模组和托盘之间，其中电芯模组中电芯上设置的第一防爆阀与开设在液冷板上的通孔相对，当电芯发生热失控时，产生的高温烟气通过与其对应的通孔，排到液冷板的第二表面与托盘底板形成的第一通道内，由于第一通道和第二通道连通设置，产生的 高温烟气可以沿着第一通道流向第二通道，通过托盘侧梁将高温烟气排出，避免了电池包内存有大量的高温烟气，进一步影响电池包的安全性。
通过以下参照附图对本说明书的示例性实施例的详细描述，本说明书的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本说明书的实施例，并且连同其说明一起用于解释本说明书的原理。
图1所示为电池包的结构示意图。
图2所示为电池包的分解结构示意图。
图3所示为电芯模组设置在液冷板上的结构示意图。
图4所示为液冷板的结构示意图。
图5所示为电池包的部分结构示意图一。
图6所示为电芯的结构示意图。
图7所示为电池包的部分结构示意图二。
附图标记说明：
1、托盘；11、托盘底板；12、托盘侧梁；121、第一侧梁；122、第二侧梁；123、第三侧梁；124、第四侧梁；1211、第一子侧梁；1212、第二子侧梁；1213、连接板；1214、安装缝隙；125、第二防爆阀；126、狭缝；
2、电芯模组；21、电芯；211、电芯壳体；212、盖板；213、第一防爆阀；214、电芯极柱；
3、液冷板；31、第一表面；32、第二表面；33、通孔；34、液冷板上板；35、液冷板下板；351、凸筋；352、凹槽；30、液冷板本体；36、冷板接口；301、承载部；
41、第一通道；42、第二通道；
5、密封盖。
具体实施方式
现在将参照附图来详细描述本申请的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论，但在适当情况下，所述技术和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本申请实施例第一方面提供了一种电池包。参照图1-图7所示，电池包包括：托盘1、电芯模组2和液冷板3。
所述托盘1包括托盘底板11和托盘侧梁12，托盘底板11和托盘侧梁12连接形成了容置空间。
所述电芯模组2位于所述容置空间内，所述电芯模组2包括多个电芯21，每一个所述电芯21具有第一防爆阀213；
所述液冷板3位于所述电芯模组2和所述托盘底板11之间且设置在所述托盘底板11上，所述液冷板3具有第一表面31和第二表面32，所述液冷板3上开设有多个通孔33，每一个所述通孔33贯穿所述第一表面31和所述第二表面32；
所述电芯模组2与所述第一表面31接触，且所述电芯21的第一防爆阀213与所述通孔33相对。
所述液冷板3的第二表面32与所述托盘底板11之间形成有第一通道41，所述托盘侧梁12内形成有第二通道42，所述第一通道41和所述第二通道42连通，以使所述电芯模组2产生的烟气流向至所述第二通道42。
换句话说，电池包主要包括了托盘1、电芯模组2和液冷板3，其中托盘1用于承载电芯模组2和液冷板3。
具体地，参照图1和图2，托盘1包括了托盘底板11和托盘侧梁12，其中托盘底板11和托盘侧梁12连接在一起围合形成了容置空间。例如托盘底板11和托盘侧梁12可以焊接在一起。在该实施例中，托盘侧梁12包括了第一侧梁121、第二侧梁122、第三侧梁123和第四侧梁124，第一侧梁121、第二侧梁122、第三侧梁123和第四侧梁124均与托盘底板11连接，围合形成了容置空间。
在该实施例中，电芯模组2和液冷板3均是设置在容置空间内，其中液冷板3是位于电芯模组2和托盘底板11之间的。具体地，电芯模组2包括多个电芯21，每一个电芯21具有第一防爆阀213，在电芯21中设置有第一防爆阀213的表面是朝向液冷板3设置的，即电芯模组2中的每一个电芯21均是倒立设置在托盘1内的。
在该实施例中，液冷板3具有第一表面31和第二表面32，其中第一表面31是背离托 盘底板11设置的，第二表面32是朝向托盘底板11设置的。具体地，液冷板3设置在托盘底板11上，且位于托盘底板11和电芯模组2之间，例如液冷板3的第二表面32与托盘底板11采用结构胶固定安装在一起。电芯模组2设置在液冷板3的第一表面31上，例如电芯模组2与液冷板3的第一表面31采用导热结构胶固定安装在一起。
在该实施例中，液冷板3上开设有通孔33，通孔33是贯穿液冷板3的第一表面31和第二表面32，即在液冷板3的厚度方向上，通孔33是贯穿液冷板3的。电芯模组2中的电芯21设置在液冷板3的第一表面31上，设置在电芯21上的第一防爆阀213是与液冷板3的通孔33相对的。例如电芯模组2设置在液冷板3上，第一防爆阀213可以是嵌设在通孔33内，或者第一防爆阀213没有直接设置在通孔33内，但在位置上，第一防爆阀213与通孔33是对应的，即第一防爆阀213与通孔33是连通的。
在该实施例中，设置在电芯21上的第一防爆阀213是与液冷板3的通孔33相对的，当电芯21发生热失控时，电芯21产生的高温烟气可以通过液冷板3上开设的通孔33进行排出。
在该实施例中，设置在电芯21上的第一防爆阀213是与液冷板3的通孔33相对的，具体地，电芯模组2包括了多个电芯21，每一个电芯21均设置有第一防爆阀213，为了与电芯模组2中的第一防爆阀213对应，在液冷板3上也开设了多个通孔33，其中第一防爆阀213与通孔33一一对应。例如参照图2所示，电芯模组2中的电芯21按照四行十五列方式排布，对应地，在液冷板3上也开设了四行十五列的通孔33。在一个可选的实施例中，靠近每一个通孔33的位置处设置有安装孔，例如可以通过紧固件将液冷板3固定在托盘底板11上。
在该实施例中，液冷板3设置在托盘底板11上，液冷板3的第二表面32与托盘底板11之间形成有第一通道41。另外在本申请实施例中，托盘侧梁12内形成有第二通道42，第一通道41和所述第二通道42连通设置。
具体地，由于电芯21的第一防爆阀213与开设在液冷板3上的通孔33相对，当电芯21发生热失控时，产生的高温烟气通过与其对应的通孔33，排到液冷板3的第二表面32与托盘底板11形成的第一通道41内，由于第一通道41和第二通道42连通设置，产生的高温烟气可以沿着第一通道41流向第二通道42，通过托盘侧梁12将高温烟气排出。
因此在本申请实施例中，提供了一种电池包，电池包包括托盘1、液冷板3和电芯模组2，其中液冷板3位于电芯模组2和托盘1之间，其中电芯模组2中电芯21上设置的第一防爆阀213与开设在液冷板3上的通孔33相对，当电芯21发生热失控时，产生的高温烟气通过与其对应的通孔33，排到液冷板3的第二表面32与托盘底板11形成的第一通道41内，由于第一通道41和第二通道42连通设置，产生的高温烟气可以沿着第一通道41流向 第二通道42，通过托盘侧梁12将高温烟气排出，避免了电池包内存有大量的高温烟气，进一步影响电池包的安全性。
在本申请实施例中，由于第一通道41是液冷板3的第二表面32与托盘底板11形成的，当电芯21通过第一防爆阀213喷出的高温烟气被液冷板3挡在电芯模组2外侧，降低高温烟气对其他电芯21的影响；另外高温烟气在通过第一通道41流向第二通道42时，高温烟气在向外排放的过程中通过液冷板3逐渐降温，将高温烟气对电池包产生的危害逐渐降低，在一定程度上可以保证了电池包的安全。
在一个实施例中，参照图6所示，所述电芯21包括电芯壳体211和盖板212，所述盖板212盖设在所述电芯壳体211上；所述盖板212上形成第一区域和第二区域，所述第一区域相对于所述第二区域凹陷设置，所述第一区域内设置有电芯极柱214，所述第二区域内设置与所述第一防爆阀213；
所述电芯模组2设置在所述液冷板3上，所述电芯极柱214与所述液冷板3的第一表面31之间存在间隙。
在该实施例中，电芯21包括电芯壳体211和盖板212，盖板212盖设在电芯壳体211上。在电芯模组2设置在液冷板3上，电芯模组2与液冷板3的第一表面31接触，即电芯21的盖板212是朝向液冷板3设置的，盖板212是与液冷板3的第一表面31接触，液冷板3可以对盖板212进行降温，以及对设置在盖板212上的极柱进行降温。
在该实施例中，盖板212上形成第一区域和第二区域，第一区域是相对于第二区域凹陷设置的，在第一区域内设置电芯极柱214，在第二区域设置第一防爆阀213，因此电芯极柱214的设置位置是低于第一防爆阀213设置的。在电芯模组2设置在液冷板3上，电芯模组2与液冷板3的第一表面31接触的情况下，电芯极柱214与液冷板3的第一表面31之间存在间隙，避免电芯极柱214与液冷板3(金属材质)接触，影响电芯21的电连接，例如可以避免发生短路现象。
参照图6所示，盖板212上形成了两个第一区域，第二区域位于两个区域之间，每一个第一区域上均设置对应的电芯极柱214，例如电芯极柱214包括正极柱和负极柱，其中正极柱可以设置在右侧第一区域，负极柱可以设置在左侧第一区域。或者盖板212上形成两个第一区域，两个第一区域相邻设置，第二区域位于其中一个第一区域的一侧。或者盖板212上形成一个第一区域和一个第二区域，在该第一区域内设置有两个电芯极柱214。
在一个实施例中，所述托盘侧梁12背离所述容置空间的一侧设置有第二防爆阀125，所述第二通道42与所述第二防爆阀125连通。
在该实施例中，在托盘侧梁12上设置有第二防爆阀125(包体防爆阀)，其中第二防爆阀125是背离容置空间设置的。具体地，托盘侧梁12内形成第二通道42，在高温烟气排 至第二通道42，当第二通道42内的高温烟气达到阈值，第二防爆阀125可以打开，以将第二通道42内的高温烟气通过第二防爆阀125排至电池包外，避免了高温烟气对电池包内电芯模组2的影响。
在一个实施例中，参照图4和图3，所述液冷板3包括液冷板上板34和液冷板下板35，所述液冷板上板34和所述液冷板下板35连接；
所述液冷板上板34与所述电芯模组2接触；
所述液冷板下板35上形成有间隔设置的多条凸筋351，相邻凸筋351之间形成有凹槽352；所述凹槽352、所述托盘底板11和所述凸筋351限定出了所述第一通道41。
在该实施例中，液冷板3包括了液冷板上板34和液冷板下板35，一般情况下，液冷板上板34为均温板，液冷板下板35为流道板。其中液冷板上板34和液冷板下板35连接构成液冷板3。例如液冷板上板34和液冷板下板35可以通过钎焊方式连接在一起。
具体地，液冷板3上开设有通孔33，例如在液冷板上板34和液冷板下板35上均开设有通孔33，其中当两者焊接在一起，液冷板上板34和液冷板下板35分别开设的通孔33一一对应。
在该实施例中液冷板上板34位于液冷板下板35上方，当液冷板3设置在托盘底板11上，电芯模组2是与液冷板上板34直接接触的。在一个可选的实施例中，液冷板上板34是平整结构，以便于电芯模组2固定在液冷板上板34上。
参照图3和图4，液冷板下板35上形成有间隔设置的多条凸筋351，例如采用冲压等方式在液冷板下板35上形成多个凸筋351。其中相邻凸筋351是间隔设置的，使得相邻凸筋351之间形成有凹槽352(相对于凸筋351而言)，当液冷板下板35固定在托盘底板11上，凸筋351是与托盘底板11接触的，而凹槽352与托盘底板11并不会接触，凹槽352和托盘底板11之间形成了空隙，该空隙为第一通道41。当电芯21发生热失控时，产生的高温烟气通过与其对应的通孔33，可以排到液冷板3的第二表面32与托盘底板11形成的第一通道41内，以便于通过液冷板3对高温烟气进行降温。
参照图3和图4，在一个具体的实施例中，液冷板下板35形成了五组凸筋组，每组凸筋组包括了四条凸筋351，每一条凸筋351是间隔设置的，使得相邻凸筋351之间形成凹槽352；相邻凸筋组之间也是间隔设置的，使得相邻凸筋组之间也形成了凹槽352，其中凸筋351沿托盘1的长度方向延伸。其中在相邻凸筋组之间形成的凹槽352内开设通孔33，使得通孔33可以直接与第一通道41直接连通，以便于将电芯模组2产生的高温烟气顺利排至第一通道41，以便于通过液冷板3对高温烟气进行降温。
在一个实施例中，参照图5和图7所示，所述托盘侧梁12包括第一子侧梁1211、第二子侧梁1212和连接板1213，所述第一子侧梁1211和所述第二子侧梁1212相对设置，所 述连接板1213与所述托盘底板11相对设置，所述连接板1213的一端与所述第一子侧梁1211连接，所述连接板1213的另一端与所述第二子侧梁1212连接，所述第一子侧梁1211、第二子侧梁1212、连接板1213和所述托盘底板11围合形成了所述第二通道42。
在该实施例中，对在托盘侧梁12内形成的第二通道42进行限定，例如托盘侧梁12可以采用冲压等方式形成，使得第一子侧梁1211、第二子侧梁1212和连接板1213一体成型。其中第一子侧梁1211和第二子侧梁1212相对并间隔设置，第一子侧梁1211和第二子侧梁1212通过连接板1213连接，使得第一子侧梁1211、第二子侧梁1212、连接板1213和托盘底板11围合形成了第二通道42。
例如可以在第一侧梁121、第二侧梁122、第三侧梁123和第四侧梁124上均形成有第二通道42。或者参照图1，第一侧梁121和第三侧梁123在电池包的宽度方向(即箭头b所示方向)上相对设置，第二侧梁122和第三侧梁123在电池包的长度方向(即箭头a所示方向)上相对设置，可以在第一侧梁121和第三侧梁123上形成第二通道42，或者可以只在第二侧梁122和第四侧梁124上形成第二通道42。其中无论是在哪一侧梁上形成第二通道42，均需要实现第一通道41和第二通道42连通。因此可以依据第一通道41的设置方向，选择性地在托盘1的侧梁上形成第二通道42。
在一个实施例中，参照图5和图7所示，所述第一子侧梁1211相对于第二子侧梁1212更靠近容置空间设置，第一子侧梁1211与所述托盘底板11之间形成有安装缝隙1214；
所述液冷板3设置在所述托盘底板11上，所述液冷板3的边缘部贯穿所述安装缝隙1214位于所述第二通道42内，以使所述第一通道41和所述第二通道42连通。
在该实施例中，第一子侧梁1211相对于第二子侧梁1212更靠近容置空间设置，在电池包的高度方向上，第一子侧梁1211的高度尺寸小于第二子侧梁1212的高度尺寸，第二子侧梁1212和托盘底板11连接在一起，第一子侧梁1211和托盘底板11并没有连接在一起，第一子侧梁1211和托盘底板11之间形成了安装缝隙1214。
当液冷板3设置在托盘底板11上，即液冷板3固定在托盘底板11上，液冷板3的边缘部能够伸入安装缝隙1214内，使得液冷板3与托盘底板11之间形成的第一通道41和托盘侧梁12之间形成的第二通道42连通，以便于排至第一通道41内的高温烟气可以顺利的排至第二通道42，便于将高温烟气排至电池包外。
在一个实施例中，参照图2、图3和图5，所述液冷板3包括液冷板本体30和冷板接口36，所述液冷板本体30形成有承载部301；
所述托盘侧梁12开设有狭缝126，所述承载部301贯穿所述狭缝126伸出所述容置空间，所述冷板接口36设置在所述承载部301上。
在该实施例中，托盘侧梁12开设有狭缝126，其中在电池包的长度方向(即箭头a所 示方向)上，狭缝126是贯穿托盘侧梁12上的。当液冷板3固定在托盘底板11上，液冷板本体30的承载部301能够穿过狭缝126位于电池包外部。当液冷板本体30的承载部301位于电池包外部，在液冷板本体30上设置有冷板接口36，以便于向液冷板3内传输冷却液。
在一个实施例中，参照图1-图5和图7所示，所述液冷板3与所述托盘底板11形成的第一通道41沿所述电池包的第一方向设置，并且形成有所述第二通道42的托盘侧梁12在所述电池包的第一方向上相对并间隔设置。
在该实施例中，对第一通道41的延伸方向和形成有第二通道42的托盘侧梁12的相对方向进行限定，其中第一通道41的延伸方向，与形成有第二通道42的托盘侧梁12的相对方向是一致的，在液冷板3设置在托盘底板11上，液冷板3与托盘底板11之间形成的第一通道41能够与在托盘侧梁12内形成的第二通道42直接连通。
参照图5和图1所示，液冷板3与托盘底板11之间形成的第一通道41沿电池包的第一方向(电池包的长度方向)设置，即第一通道41沿电池包的长度方向延伸设置。在第二侧梁122和第四侧梁124上均设置有第二通道42，其中第二侧梁122和第四侧梁124在电池包的长度方向上相对并间隔设置。在液冷板3设置在托盘底板11上，液冷板3与托盘底板11之间形成的第一通道41能够与在托盘侧梁12内形成的第二通道42直接连通。
在一个实施例中，参照图1和图2，所述电池包还包括密封盖5，所述密封盖5盖设在所述托盘1上。
在该实施例中，电池包还包括了密封盖5，密封盖5盖设在托盘1上，能够对设置在托盘1内部的液冷板3和电芯模组2起到保护作用。
第二方面，提供了一种车辆。所述车辆包括如第一方面所述的电池包。
在该实施例中，提供了一种车辆，车辆可以为混合动力车辆或者电动车辆。
上文实施例中重点描述的是各个实施例之间的不同，各个实施例之间不同的优化特征只要不矛盾，均可以组合形成更优的实施例，考虑到行文简洁，在此则不再赘述。
虽然已经通过示例对本申请的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本申请的范围。本领域的技术人员应该理解，可在不脱离本申请的范围和精神的情况下，对以上实施例进行修改。本申请的范围由所附权利要求来限定。

Claims (10)

  1. 一种电池包，其中，包括：
    托盘(1)，所述托盘(1)包括托盘底板(11)和托盘侧梁(12)，所述托盘底板(11)和所述托盘侧梁(12)连接形成了容置空间；
    电芯模组(2)，所述电芯模组(2)位于所述容置空间内，所述电芯模组(2)包括多个电芯(21)，每一个所述电芯(21)具有第一防爆阀(213)；和
    液冷板(3)，所述液冷板(3)位于所述电芯模组(2)和所述托盘底板(11)之间且设置在所述托盘底板(11)上，所述液冷板(3)具有第一表面(31)和第二表面(32)，所述液冷板(3)上开设有多个通孔(33)，每一个所述通孔(33)贯穿所述第一表面(31)和所述第二表面(32)；
    所述电芯模组(2)与所述第一表面(31)接触，且所述电芯(21)的第一防爆阀(213)与所述通孔(33)相对；
    所述液冷板(3)的第二表面(32)与所述托盘底板(11)之间形成有第一通道(41)，所述托盘侧梁(12)内形成有第二通道(42)，所述第一通道(41)和所述第二通道(42)连通，以使所述电芯模组(2)产生的烟气流向至所述第二通道(42)。
  2. 根据权利要求1所述的电池包，其中，所述电芯(21)包括电芯壳体(211)和盖板(212)，所述盖板(212)盖设在所述电芯壳体(211)上；所述盖板(212)上形成第一区域和第二区域，所述第一区域相对于所述第二区域凹陷设置，所述第一区域内设置有电芯极柱(214)，所述第二区域内设置与所述第一防爆阀(213)；
    所述电芯模组(2)设置在所述液冷板(3)上，所述电芯极柱(214)与所述液冷板(3)的第一表面(31)之间存在间隙。
  3. 根据权利要求1或2所述的电池包，其中，所述托盘侧梁(12)背离所述容置空间的一侧设置有第二防爆阀(125)，所述第二通道(42)与所述第二防爆阀(125)连通。
  4. 根据权利要求1-3中任一项所述的电池包，其中，所述液冷板(3)包括液冷板上板(34)和液冷板下板(35)，所述液冷板上板(34)和所述液冷板下板(35)连接；
    所述液冷板上板(34)与所述电芯模组(2)接触；
    所述液冷板下板(35)上形成有间隔设置的多条凸筋(351)，相邻凸筋(351)之间形成有凹槽(352)；所述凹槽(352)、所述托盘底板(11)和所述凸筋(351)限定出了所述第一通道(41)。
  5. 根据权利要求1-4中任一项所述的电池包，其中，所述托盘侧梁(12)包括第一子侧梁(1211)、第二子侧梁(1212)和连接板(1213)，所述第一子侧梁(1211)和所述第 二子侧梁(1212)相对设置，所述连接板(1213)与所述托盘底板(11)相对设置，所述连接板(1213)的一端与所述第一子侧梁(1211)连接，所述连接板(1213)的另一端与所述第二子侧梁(1212)连接，所述第一子侧梁(1211)、第二子侧梁(1212)、连接板(1213)和所述托盘底板(11)围合形成了所述第二通道(42)。
  6. 根据权利要求5所述的电池包，其中，所述第一子侧梁(1211)相对于所述第二子侧梁(1212)更靠近所述容置空间设置，所述第一子侧梁(1211)与所述托盘底板(11)之间形成有安装缝隙(1214)；
    所述液冷板(3)设置在所述托盘底板(11)上，所述液冷板(3)的边缘部贯穿所述安装缝隙(1214)位于所述第二通道(42)内，以使所述第一通道(41)和所述第二通道(42)连通。
  7. 根据权利要求1-6中任一项所述的电池包，其中，所述液冷板(3)包括液冷板本体(30)和冷板接口(36)，所述液冷板本体(30)形成有承载部(301)；
    所述托盘侧梁(12)开设有狭缝(126)，所述承载部(301)贯穿所述狭缝(126)伸出所述容置空间，所述冷板接口(36)设置在所述承载部(301)上。
  8. 根据权利要求1-7中任一项所述的电池包，其中，所述液冷板(3)与所述托盘底板(11)形成的第一通道(41)沿所述电池包的第一方向设置，并且形成有所述第二通道(42)的托盘侧梁(12)在所述电池包的第一方向上相对并间隔设置。
  9. 根据权利要求1-8中任一项所述的电池包，其中，所述电池包还包括密封盖(5)，所述密封盖(5)盖设在所述托盘(1)上。
  10. 一种车辆，其中，所述车辆包括如权利要求1-9中任一项所述的电池包。
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