WO2021232705A1 - 一种电池包外壳、电池包及电动车 - Google Patents

一种电池包外壳、电池包及电动车 Download PDF

Info

Publication number
WO2021232705A1
WO2021232705A1 PCT/CN2020/128117 CN2020128117W WO2021232705A1 WO 2021232705 A1 WO2021232705 A1 WO 2021232705A1 CN 2020128117 W CN2020128117 W CN 2020128117W WO 2021232705 A1 WO2021232705 A1 WO 2021232705A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
battery pack
sub
plate
bottom plate
Prior art date
Application number
PCT/CN2020/128117
Other languages
English (en)
French (fr)
Inventor
王晓鹏
彭青波
鲁志佩
朱建华
朱燕
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
Priority to JP2022571135A priority Critical patent/JP7451766B2/ja
Priority to CA3178237A priority patent/CA3178237A1/en
Priority to KR1020227044780A priority patent/KR20230012631A/ko
Priority to EP20936964.4A priority patent/EP4156388A1/en
Publication of WO2021232705A1 publication Critical patent/WO2021232705A1/zh
Priority to US17/989,608 priority patent/US20230082924A1/en

Links

Images

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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/112—Monobloc comprising multiple compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M50/236—Hardness
    • 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
    • H01M50/24—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 from their environment, e.g. from corrosion
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present disclosure relates to the field of batteries, in particular to a battery pack casing, a battery pack and an electric vehicle.
  • the battery pack shell includes a tray and an upper cover connected to the tray.
  • the tray is usually formed by welding a plurality of side beams and a bottom plate.
  • some strengthening beams and longitudinal beams are generally welded inside the pallet. In this way, the tray will have too many parts, complex structure, and low space utilization.
  • the existing battery pack shell structure is relatively simple and has poor versatility, which is not conducive to the standardization, modularization, and mass production of battery packs.
  • a battery pack housing comprising a housing main body, the housing main body including a plurality of connected sub-shells, at least one of the sub-shells is provided with at least one reinforcing plate;
  • the sub-housing includes a top plate and a bottom plate oppositely arranged along a first direction, the first direction is the height direction of the housing, the reinforcing plate is located between the top plate and the bottom plate, and at least one of the reinforcing plates is located between the top plate and the bottom plate.
  • the plate is connected to the top plate and the bottom plate, and at least one of the reinforcing plates divides the interior of the corresponding sub-housing into a plurality of accommodating cavities;
  • the housing is provided with a mounting part, and the mounting part is used for connecting and fixing with an external load.
  • a battery pack including the above-mentioned battery pack casing.
  • an electric vehicle including a vehicle body and the above-mentioned battery pack, the battery pack being fixed to the vehicle body by the mounting portion.
  • the outer shell of the battery pack in the present disclosure includes a plurality of connected sub-shells, and the number of sub-shells can be selected according to actual needs, which can increase the flexibility and versatility of the battery pack design, thereby facilitating Standardization, modularization, and mass production of battery packs.
  • the reinforcing plate is located between the top plate and the bottom plate, and the reinforcing plate is connected to the top plate and the bottom plate.
  • Such a design makes the three of the reinforcing plate, the top plate and the bottom plate form an I-shaped structure, which has high strength And rigidity, so that the outer shell of the battery pack has better load-bearing, impact resistance and anti-extrusion properties.
  • the battery pack case of the present disclosure has a relatively simple structure, a lower manufacturing cost, and a higher space utilization rate.
  • the structural strength of the battery pack can be used as a part of the structural strength of the entire vehicle, thereby improving the structural strength of the entire vehicle, which is conducive to the realization of the lightweight design of the entire electric vehicle Requirements, while also reducing the design and manufacturing costs of the entire vehicle.
  • FIG. 1 is a schematic structural diagram of a battery pack provided by an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of a battery pack housing provided by an embodiment of the disclosure.
  • Figure 3 is a partial enlarged view of A in Figure 2;
  • FIG. 4 is an exploded view of a battery pack housing provided by an embodiment of the disclosure.
  • FIG. 5 is an exploded view of a battery pack casing provided by an embodiment of the present disclosure.
  • FIG. 6 is an exploded view of another battery pack housing provided by an embodiment of the present disclosure.
  • Fig. 7 is a schematic structural diagram of an explosion-proof valve provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a sub-housing provided by an embodiment of the present disclosure.
  • Fig. 9 is a partial enlarged view of B in Fig. 8.
  • FIG. 10 is a schematic structural diagram of another seed shell provided by an embodiment of the present disclosure.
  • Fig. 11 is a partial enlarged view of C in Fig. 10;
  • FIG. 12 is a schematic structural diagram of an electric vehicle provided by an embodiment of the disclosure.
  • Shell 100.
  • 101 sub-shell; 102, top plate; 103, bottom plate; 104, mounting part; 105, mounting hole; 106, first side beam; 107, second side beam; 108, partition; 109, connection Plate; 110, opening; 111, end plate; 112, plastic injection hole; 113, heat dissipation fin; 114, runner; 115, shell body;
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present disclosure, “plurality” means two or more than two, unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed may be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • the first embodiment of the present disclosure provides a battery pack housing 100.
  • the housing 100 includes a housing main body 115.
  • the housing main body 115 includes a plurality of connected sub-housings 101, and at least one of the sub-housings 101 is provided inside
  • the sub-housing 101 includes a top plate 102 and a bottom plate 103 oppositely arranged along a first direction, the first direction is the height direction of the housing 100, the reinforcing plate 200 is located between the top plate 102 and the bottom plate 103, at least one reinforcing plate
  • the board 200 is connected to the top board 102 and the bottom board 103, and at least one reinforcing board 200 divides the interior of the corresponding sub-housing 101 into a plurality of accommodating cavities 300;
  • the housing 100 is provided with a mounting portion 104, which is used to connect and fix the external load .
  • the first direction is the X direction in the figure.
  • the outer casing 100 of the battery pack 10 in the present disclosure includes a plurality of connected sub-housings 101, and the number of the sub-housings 101 can be selected according to actual needs, which can increase the flexibility and versatility of the design of the battery pack 10, thereby benefiting the battery.
  • the package 10 is standardized, modularized, and mass-produced.
  • the reinforcing plate 200 is located between the top plate 102 and the bottom plate 103, and the reinforcing plate 200 is connected to the top plate 102 and the bottom plate 103.
  • the three of the reinforcing plate 200, the top plate 102 and the bottom plate 103 form an I-shaped structure
  • This structure has higher strength and rigidity, so that the outer shell 100 of the battery pack 10 has better load-bearing, anti-impact, and anti-extrusion properties.
  • the battery pack 10 box body of the present disclosure has a relatively simple structure, a low manufacturing cost, and a high space utilization rate.
  • the structural strength of the battery pack 10 can be used as a part of the structural strength of the entire vehicle, thereby improving the structural strength of the entire vehicle, which is conducive to the realization of lightweight electric vehicles. It also reduces the design and manufacturing costs of the entire vehicle.
  • the housing 100 of the battery pack 10 of the present disclosure is provided with a mounting portion 104, and the housing 100 of the battery pack 10 is detachably or non-detachably connected to an external load through the mounting portion 104 provided thereon.
  • the casing 100 of the battery pack 10 needs to be connected and fixed with an external load, so it has special requirements for its anti-impact and anti-extrusion properties, so it cannot be simply equated with the casing of a battery module or a single battery.
  • the battery pack 10 also includes at least one of a battery management system (BMS), a battery connector, a battery sampler, and a battery thermal management system.
  • BMS battery management system
  • the reinforcing plate 200 is connected to the top plate 102 and the bottom plate 103. It can be understood that the reinforcing plate 200 is integrally formed with the top plate 102 and the bottom plate 103; or the reinforcing plate 200, the top plate 102 and the bottom plate 103 are made separately, and then directly or The connection is made in an indirect connection mode, and the present disclosure does not specifically limit this.
  • the direct connection may be that one end of the reinforcing plate 200 is connected to the bottom plate 103, and the opposite end of the reinforcing plate 200 is connected to the top plate 102.
  • the indirect connection may be that one end of the reinforcing plate 200 is connected to the bottom plate 103 through the middle plate, and the opposite end of the reinforcing plate 200 is connected to the top plate 102 through the middle plate.
  • At least one reinforcing plate 200 is joined to the top plate 102 and the bottom plate 103.
  • the top plate 102, the bottom plate 103, and the reinforcement plate 200 are integrally formed; or, one of the top plate 102 and the bottom plate 103 is integrally formed with the reinforcement plate 200, and the other is welded to the reinforcement plate 200; or, the reinforcement plate 200
  • One end is welded to the bottom plate 103, and the opposite end of the reinforcing plate 200 is welded to the top plate 102.
  • one end of the reinforcing plate 200 is welded to the bottom plate 103, and then the opposite end of the reinforcing plate 200 is welded to the top plate 102.
  • the housing 100 further includes first side beams 106 and second side beams 107 distributed on opposite sides of the housing main body 115 along a second direction, and the second direction is the housing 100 The width direction or the length direction of the housing 100. Wherein, the second direction is the Y direction in the figure.
  • the plurality of sub-housings 101 are arranged in sequence along the second direction.
  • the sub-housings 101 located at both ends of the second direction are end sub-housings, and two One of the end sub-shells is connected to the first side beam 106 and the other is connected to the second side beam 107.
  • the first sub-housing 101 and the last sub-housing 101 along the Y direction in FIG. 4 are end sub-housings, respectively.
  • the end sub-shell connected to the first edge beam 106 and the first edge beam 106 are integrally formed, and the end sub-shell connected to the second edge beam 107 and the second edge beam 107 are integrally formed forming. In this way, not only can the processing technology be simplified, the cost can be reduced, but also sufficient structural strength can be ensured.
  • At least one of the top plate 102 and the bottom plate 103 of the end sub-shell connected to the first side beam 106 is integrally formed with the first side beam 106, and the end sub-shell connected to the second side beam 107 At least one of the top plate 102 and the bottom plate 103 of the body and the second side beam 107 are integrally formed.
  • the end sub-shell connected to the first edge beam 106 and the first edge beam 106 are integrally formed, and the end sub-shell connected to the second edge beam 107 and the second edge beam 107 pass Connect directly or indirectly.
  • the end sub-shell connected to the second edge beam 107 and the second edge beam 107 are integrally formed, and the end sub-shell connected to the first edge beam 106 and the first edge beam 106 are directly or indirectly formed connect.
  • the first side beam 106 and the second side beam 107 have a cavity inside, and a partition 108 is provided in the cavity, and the partition 108 divides the cavity into a plurality of sub-parts. Cavity.
  • a partition 108 is provided in the cavity, and the partition 108 divides the cavity into a plurality of sub-parts. Cavity.
  • the first side beam 106 or the second side beam 107 has a cavity inside.
  • the housing 100 further includes a connecting plate 109, and the connecting plate 109 is connected between two adjacent sub-housings 101.
  • the connection mode is not specifically limited in the present disclosure, and may be a detachable connection, such as bolt connection, riveting, etc.; or a non-detachable connection, such as welding, bonding, etc.
  • the connecting plate 109 has a cavity inside, and a partition 108 is provided in the cavity, and the partition 108 divides the cavity into a plurality of sub-cavities.
  • the sub-housing 101 is provided with a plurality of reinforcing plates 200, the plurality of reinforcing plates 200 are spaced along the second direction, and the length of each reinforcing plate 200 is along the third direction.
  • Each reinforcing plate 200 is connected to the top plate 102 and the bottom plate 103, and the first direction, the second direction, and the third direction are different.
  • a plurality of reinforcing plates 200 are provided in each sub-housing 101.
  • a plurality of reinforcing plates 200 may be provided in part of the sub-housing 101 according to actual needs.
  • the first direction is the height of the housing 100
  • the second direction is the width direction of the housing 100
  • the third direction is the length direction of the housing 100
  • the second direction is the length direction of the housing 100
  • the third direction is The width direction of the housing 100.
  • the first direction is the X direction in the figure
  • the second direction is the Y direction in the figure
  • the third direction is the Z direction in the figure.
  • any two of the first direction, the second direction, and the third direction may also be set at other angles, such as 80° or 85°, which is not specifically limited in the present disclosure.
  • the reinforcing plate 200 is connected to the top plate 102 and the bottom plate 103. It can be understood that the reinforcing plate 200 is integrally formed with the top plate 102 and the bottom plate 103; or the reinforcing plate 200, the top plate 102 and the bottom plate 103 are made separately and then The connection is made through direct or indirect connection, which is not specifically limited in the present disclosure.
  • At least one of the top plate 102 and the bottom plate 103 is integrally formed with the reinforcing plate 200.
  • Such a configuration not only has a simple processing technology, and is beneficial to reduce production costs, but also ensures that the housing 100 has sufficient structural strength and rigidity to meet the requirements of the housing 100 for its load-bearing, impact resistance, and anti-extrusion properties.
  • the top plate 102, the bottom plate 103 and the reinforcing plate 200 are integrally formed.
  • one-piece aluminum profile extrusion can be used.
  • the bottom plate 103 and the reinforcing plate 200 are integrally formed, and then the top plate 102 and the reinforcing plate 200 are welded.
  • the top plate 102 and the reinforcing plate 200 are integrally formed, and then the bottom plate 103 is welded to the reinforcing plate 200 again.
  • each reinforcing plate 200 when each reinforcing plate 200 is connected to the top plate 102 and the bottom plate 103, each of the reinforcing plates 200, top plate 102 and bottom plate 103 forms an "I"-shaped structure, so that the outer shell 100 of the battery pack 10 has a honeycomb structure as a whole.
  • This structure has high strength and rigidity, so that it can meet the requirements of the housing 100 for load-bearing, anti-impact, and anti-extrusion properties.
  • the structure of the housing 100 is relatively simple and the space utilization rate is high.
  • the structural strength of the battery pack 10 can be used as a part of the structural strength of the entire vehicle, thereby improving the structural strength of the entire vehicle, which is conducive to the realization of the lightweight design of the entire electric vehicle Requirements, while also reducing the design and manufacturing costs of the entire vehicle.
  • first side beam 106 and the second side beam 107 are provided with a mounting portion 104, and the mounting portion 104 is used for connection and fixation with an external load.
  • the mounting portion 104 can also be provided on the top plate 102 or the bottom plate 103.
  • the mounting portion 104 is a mounting hole 105 provided on the first side beam 106 and the second side beam 107.
  • the mounting hole 105 is used for passing fasteners (such as bolts or rivets) to connect and fix the battery pack 10 to an external load.
  • the mounting hole 105 provided on the first side beam 106 penetrates the first side beam 106 in the first direction
  • the mounting hole 105 provided on the second side beam 107 penetrates the second side beam in the first direction. 107.
  • the axial direction of the mounting hole 105 and the first direction may also be arranged at an included angle, for example, 5° or 10°.
  • the mounting holes 105 provided on the first side beam 106 are sequentially arranged along the length direction of the first side beam 106.
  • the length direction of the first side beam 106 is parallel to the third direction.
  • the mounting holes 105 provided on the second side beam 107 are sequentially arranged along the length direction of the second side beam 107. Wherein, the length direction of the second side beam 107 is parallel to the third direction.
  • the mounting portion 104 is a lifting ring provided on the first side beam 106 and the second side beam 107.
  • the lifting ring is fixedly connected with the external load to connect and fix the battery pack 10 on the external load.
  • the mounting portion 104 is a mounting block provided on the first side beam 106 and the second side beam 107, and the mounting block can be fixed to an external load by welding.
  • the mounting block can also be fixed to the external load by gluing or clamping.
  • the length of the containing cavity 300 along the third direction is greater than 500 mm. According to some embodiments of the present disclosure, the length of the containing cavity 300 along the third direction is 500 mm-2500 mm. With this design, more batteries or electrode core groups can be accommodated, so that the battery pack 10 can meet the requirements of larger capacity and higher space utilization.
  • the length of the receiving cavity 300 along the third direction is 1000 mm-2000 mm.
  • the length of the receiving cavity 300 along the third direction is 1300 mm-2200 mm.
  • the sub-housing 101 has a first end and a second end opposite to each other in a third direction, and the first end and the second end of the sub-housing 101 are at least One is provided with an opening 110; the housing 100 further includes an end plate 111 that closes the opening 110, and each opening 110 corresponds to at least one end plate 111.
  • the end plate 111 corresponding to the opening 110 of the sub-housing 101 needs to be removed when replacing or overhauling, so that the operation can be simplified.
  • the manner in which the end plate 111 seals the opening 110 of the sub-housing 101 is not specifically limited.
  • the end plate 111 and the sub-housing 101 are welded to close the opening 110 of the sub-housing 101; or, the end plate 111 and the sub-housing 101 are welded. Bonding to close the opening 110 of the sub-housing 101; or, the end plate 111 is riveted or screwed to the sub-housing 101, and a gasket is provided between the end plate 111 and the sub-housing 101 to close the opening 110 of the sub-housing 101 Opening 110.
  • each opening 110 corresponds to an end plate 111 respectively.
  • each opening 110 may also correspond to multiple end plates 111, that is, multiple end plates 111 close one opening 110 of the sub-housing 101.
  • the multiple end plates 111 located at the same end of the shell body 115 along the third direction are integrally formed. That is, the multiple end plates 111 located at the first end of the shell main body 115 are integrally formed pieces, or the multiple end plates 111 located at the second end of the shell main body 115 are integrally formed pieces, or alternatively, the multiple end plates 111 located on the second end of the shell main body 115 are integrally formed.
  • the multiple end plates 111 at the first end and the multiple end plates 111 at the second end of the shell body 115 are all integrally formed pieces. This arrangement can simplify the processing of the end plate 111 and is beneficial to saving costs.
  • the battery pack housing 100 is a sealed housing 100, and the air pressure in the accommodating cavity 300 is lower than the air pressure outside the housing 100.
  • the air pressure in the accommodating chamber 300 is lower than the air pressure outside the housing 100 through a vacuum operation, which can reduce the amount of water vapor and other substances in the housing 100, and avoid the long-term effect of water vapor on the electrode core groups, batteries, etc. in the housing 100
  • the parts cause aging, damage and other influences, thereby helping to increase the service life of the battery pack 10.
  • the sealed housing 100 can also achieve a secondary sealing effect.
  • the pressure in the accommodating cavity 300 is -40KPa to -70KPa.
  • a setting can ensure that the stock of water vapor, oxygen and other substances in the housing 100 is reduced, and the long-term aging effect of water vapor and oxygen on the inner electrode core group and various parts of the housing 100 is beneficial to improve the inner electrode core group and the individual parts of the housing 100 The service life of components.
  • the housing 100 is provided with a suction hole communicating with the containing cavity 300.
  • the inside of the casing 100 can be vacuumed through the air extraction hole, which can reduce the storage of water vapor and other substances in the casing 100, and avoid the long-term effect of water vapor on the battery or electrode core assembly and other components in the casing 100 from aging and damage. This is beneficial to improve the service life of the battery pack 10.
  • the casing 100 is provided with a glue injection hole 112 (as shown in FIG. 2), each containing cavity 300 is correspondingly communicated with at least one glue hole 112, and the glue hole 112 is used to connect to the corresponding containing cavity 300
  • the inside is filled with glue to fix the electrode core assembly or the battery arranged in the containing cavity 300 and the housing 100 to further improve the structural strength of the battery pack 10.
  • the glue injection hole 112 is provided on the top plate 102 of the sub-housing 101.
  • the glue injection hole 112 may also be provided on the bottom plate 103 of the sub-housing 101.
  • an explosion-proof valve 400 is provided on the housing 100, and the explosion-proof valve 400 seals the glue injection hole 112.
  • the explosion-proof valve 400 can not only serve as a sealing cover for sealing the glue injection hole 112, but also play a role of safety and explosion-proof.
  • the explosion-proof valve 400 has a weakened area 403; the explosion-proof valve 400 includes a cover 402 that is hermetically connected to the housing 100 and a protrusion 401 provided on the cover 402.
  • the protrusion 401 Protruding toward the side away from the housing 100, a weakened area 403 is formed on the outer peripheral wall of the protrusion 401.
  • the weakened area 403 may be a groove or a notch.
  • the thickness of the weakened area 403 is lower than the thickness of other parts of the explosion-proof valve 400.
  • the glue injection hole 112 is provided on the top plate 102, and the cover body 402 and the top plate 102 are hermetically connected.
  • the sealed connection can be realized by welding or gluing.
  • the explosion-proof valve 400 includes a cover body 402 and a raised portion 401 provided on the cover body 402.
  • the edge of the cover body 402 is connected to the inner wall of the glue hole 112, and the raised portion 401 faces from the cover body 402. The side facing away from the pole core group protrudes.
  • heat dissipation fins 113 are provided on the bottom plate 103.
  • the heat dissipation fins 113 and the bottom plate 103 are integrally formed.
  • the bottom plate 103 is integrally extruded with an aluminum profile to form the heat dissipation fins 113. This arrangement can simplify the processing technology and help reduce costs.
  • a flow channel 114 is provided on the bottom plate 103.
  • the flow channel 114 is integrally formed on the bottom plate 103.
  • the bottom plate 103 is integrally extruded with an aluminum profile to form the flow channel 114. This arrangement can simplify the processing technology and help reduce costs.
  • the present disclosure also provides a battery pack 10, including the above-mentioned battery pack housing 100.
  • the battery pack 10 provided by the present disclosure adopts the above-mentioned battery pack housing 100, which can increase the flexibility and versatility of the design of the battery pack 10, thereby facilitating the standardization, modularization, and mass production of the battery pack 10.
  • the aforementioned battery pack housing 100 has better load-bearing, impact resistance and anti-extrusion performance, so that the battery pack 10 has a higher structural strength.
  • the present disclosure also provides an electric vehicle 500 (refer to FIG. 12 ), which includes a vehicle body and the above-mentioned battery pack 10, and the battery pack 10 is fixed to the vehicle body by a mounting portion 104.
  • the structural strength of the battery pack 10 can be used as a part of the structural strength of the entire vehicle, so that the structural strength of the entire vehicle can be improved, which is beneficial to realize Complete electric vehicle.
  • Lightweight design requirements also reduce the design and manufacturing costs of the entire vehicle.
  • the height of the battery pack 10 of the present disclosure is relatively low, so that it does not occupy too much space at the height of the vehicle.

Abstract

本公开提供了一种电池包外壳、电池包和电动车，外壳包括壳主体，壳主体包括多个相连的子壳体，至少一个子壳体内设有至少一个加强板；子壳体包括沿第一方向相对设置的顶板和底板，第一方向为外壳的高度方向，加强板位于顶板与底板之间，至少一个加强板连接于顶板和底板，至少一个加强板将对应的子壳体内部分隔成多个容纳腔；外壳上设有安装部，安装部用于与外部负载连接固定。本公开的电池包外壳，具有较高的结构强度以及较高的空间利用率，且结构简单、组装效率高、通用性强。

Description

一种电池包外壳、电池包及电动车
相关申请的交叉引用
本公开基于申请号为202010444233.6，申请日为2020年5月22日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本公开作为参考。
技术领域
本公开涉及电池领域，具体涉及一种电池包外壳、电池包及电动车。
背景技术
相关技术中，电池包外壳包括托盘及与托盘连接的上盖，托盘通常由多个边梁及底板焊接而成。并且，托盘作为主要的承重部件，为了保证其具有足够的结构强度，一般会在托盘的内部焊接一些加强横梁和纵梁。这样，将导致托盘的零部件太多、结构复杂、空间利用率较低。此外，现有的电池包外壳结构比较单一、通用性较差，不利于电池包的标准化、模块化、批量化生产制造。
发明内容
本公开的第一个方面，提供一种电池包外壳，所述外壳包括壳主体，所述壳主体包括多个相连的子壳体，至少一个所述子壳体内设有至少一个加强板；
所述子壳体包括沿第一方向相对设置的顶板和底板，所述第一方向为所述外壳的高度方向，所述加强板位于所述顶板与所述底板之间，至少一个所述加强板连接于所述顶板和所述底板，至少一个所述加强板将对应的所述子壳体内部分隔成多个容纳腔；
所述外壳上设有安装部，所述安装部用于与外部负载连接固定。
在本公开的第二个方面，提供一种电池包，包括上述的电池包外壳。
在本公开的第三个方面，提供一种电动车，包括车体和上述的电池包，所述电池包通过所述安装部固定于所述车体。
本公开的有益效果：本公开中电池包的外壳包括多个相连的子壳体，并且可根据实际需求选取子壳体的数量，这样可增加电池包设计的灵活性和通用性，从而有利于电池 包的标准化、模块化、以及批量化地生产制造。而且，本公开中加强板位于顶板与底板之间，且加强板连接于顶板和底板，如此设计使得加强板、顶板及底板三者构成“工”字型结构，这种结构具有较高的强度和刚度，从而可使电池包的外壳具有较好的承重、抗撞击以及抗挤压等性能。并且，本公开的电池包箱体的结构比较简单、制作成本较低，而且空间利用率较高。此外，当将这种电池包安装到整车上时，该电池包的结构强度可以作为整车结构强度的一部分，从而可提升整车的结构强度，有利于实现电动汽车整车轻量化的设计要求，同时也降低整车的设计和制造成本。
附图说明
图1为本公开一实施例提供的一种电池包的结构示意图；
图2为本公开一实施例提供的电池包外壳的结构示意图；
图3为图2中A处的局部放大图；
图4为本公开一实施例提供的一种电池包外壳的分解图；
图5为本公开一实施例提供的一种电池包外壳的分解图；
图6为本公开一实施例提供的另一种电池包外壳的分解图；
图7为本公开一实施例提供的一种防爆阀的结构示意图；
图8为本公开一实施例提供的一种子壳体的结构示意图；
图9为图8中B处的局部放大图；
图10为本公开一实施例提供的另一种子壳体的结构示意图；
图11为图10中C处的局部放大图；
图12为本公开一实施例提供的电动车的结构示意图。
附图标记：
10、电池包；
100、外壳；101、子壳体；102、顶板；103、底板；104、安装部；105、安装孔；106、第一边梁；107、第二边梁；108、隔板；109、连接板；110、开口；111、端板；112、注胶孔；113、散热翅片；114、流道；115、壳主体；
200、加强板；
300、容纳腔；
400、防爆阀；401、凸起部；402、盖体；403、薄弱区；
500、电动车。
具体实施方式
以下所述是本公开的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开原理的前提下，还可以做出多个改进和润饰，这些改进和润饰也视为本公开的保护范围。
在本公开的描述中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的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公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
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。在本公开的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是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公开中的具体含义。
请参阅图1至图4，本公开第一实施例提供一种电池包外壳100，外壳100包括壳主体115，壳主体115包括多个相连的子壳体101，至少一个子壳体101内设有至少一个加强板200；子壳体101包括沿第一方向相对设置的顶板102和底板103，第一方向为外壳100的高度方向，加强板200位于顶板102与底板103之间，至少一个加强板200连接于顶板102和底板103，至少一个加强板200将对应的子壳体101内部分隔成多个容纳腔300；外壳100上设有安装部104，安装部104用于与外部负载连接固定。其中，第一方向为图中X方向。
本公开中电池包10的外壳100包括多个相连的子壳体101，并且可根据实际需求选取子壳体101的数量，这样可增加电池包10设计的灵活性和通用性，从而有利于电池包10的标准化、模块化、以及批量化地生产制造。而且，本公开中加强板200位于顶板102与底板103之间，且加强板200连接于顶板102和底板103，如此设计使得加强板200、顶板102及底板103三者构成“工”字型结构，这种结构具有较高的强度和刚度，从而可使电池包10的外壳100具有较好的承重、抗撞击以及抗挤压等性能。并且， 本公开的电池包10箱体的结构比较简单、制作成本较低，而且空间利用率较高。此外，当将这种电池包10安装到整车上时，该电池包10的结构强度可以作为整车结构强度的一部分，从而可提升整车的结构强度，有利于实现电动汽车整车轻量化的设计要求，同时也降低整车的设计和制造成本。
需要说明的是，本公开的电池包10的外壳100上设有安装部104，电池包10的外壳100通过设置在其上的安装部104与外部负载实现可拆卸或不可拆卸的连接固定。通常而言，电池包10的外壳100需要与外部负载连接固定，因此对其抗撞击、抗挤压等性能都有特殊的要求，故不能简单将其等同于电池模组或单体电池的外壳100。一般地，电池包10还包括电池管理系统(BMS)、电池连接器、电池采样器和电池热管理系统中的至少之一。
另外，加强板200连接于顶板102和底板103，可以理解为，加强板200与顶板102及底板103一体成型；或者，加强板200、顶板102和底板103分别单独制成，然后再通过直接或者间接的连接方式进行连接，对此，本公开不作具体限定。直接连接可以为加强板200的一端与底板103连接，加强板200相对的另一端与顶板102连接。间接连接可以为加强板200的一端通过中间板与底板103连接，加强板200相对的另一端与通过中间板与顶板102连接。
在一些实施例中，至少一个加强板200接合于顶板102和底板103。可以理解为，顶板102、底板103及加强板200三者一体成型；或者，顶板102和底板103中的一个与加强板200一体成型，另一个再与加强板200焊接；或者，加强板200的一端与底板103焊接，加强板200相对的另一端与顶板102焊接。或者，加强板200的一端与底板103焊接，然后加强板200相对的另一端与顶板102焊接。
在一实施例中，如图1及图2所示，外壳100还包括沿第二方向分布于壳主体115相对两侧的第一边梁106和第二边梁107，第二方向为外壳100的宽度方向或外壳100的长度方向。其中，第二方向为图中Y方向。
在一实施例中，如图4所示，多个子壳体101沿第二方向依次排布，多个子壳体101中位于第二方向两端的子壳体101为端部子壳体，两个端部子壳体中的一个与第一边梁106连接，另一个与第二边梁107连接。其中，图4中沿Y方向上的第一个子壳体101和最后一个子壳体101分别为端部子壳体。
根据本公开的一些实施例，与第一边梁106连接的端部子壳体和第一边梁106一体成型，与第二边梁107连接的端部子壳体和第二边梁107一体成型。这样，不仅可以简化加工工艺、降低成本、还可保证其具有足够的结构强度。
在一些实施例中，与第一边梁106连接的端部子壳体的顶板102和底板103中至少之一和第一边梁106一体成型，与第二边梁107连接的端部子壳体的顶板102和底板103中至少之一和第二边梁107一体成型。例如，采用一体式铝型材挤压成型。
然而，在其他实施例中，与第一边梁106连接的端部子壳体和第一边梁106一体成型，与第二边梁107连接的端部子壳体和第二边梁107通过直接或间接的方式进行连接。或者，与第二边梁107连接的端部子壳体和第二边梁107一体成型，与第一边梁106连接的端部子壳体和第一边梁106通过直接或间接的方式进行连接。
在一实施例中，如图2至图4所示，第一边梁106和第二边梁107内部具有空腔，空腔内设有隔板108，隔板108将空腔分隔成多个子腔。如此设置，可保证第一边梁106和第二边梁107具有一定的结构强度，从而有利于提高电池包10的抗撞击和抗挤压的强度。然而，在其他实施例中，第一边梁106或第二边梁107内部具有空腔。
在一实施例中，如图2至图4所示，外壳100还包括连接板109，连接板109连接于两个相邻的子壳体101之间。本公开中对于该连接方式不作具体限定，可以为可拆卸连接，例如螺栓连接、铆接等；或者为不可拆卸连接，例如焊接、粘接等。
在一实施例中，如图3所示，连接板109内部具有空腔，空腔内设有隔板108，隔板108将空腔分隔成多个子腔。如此设置，可增加连接板109的结构强度，进而可提高两个子壳体101连接的可靠性。
在一实施例中，如图2及图3所示，子壳体101内设有多个加强板200，多个加强板200沿第二方向间隔分布，每个加强板200的长度沿第三方向延伸，每个加强板200连接于顶板102和底板103，第一方向、第二方向、第三方向不同。在本实施例中，每个子壳体101内均设有多个加强板200。当然，在其他实施例中，根据实际需要也可以是部分子壳体101内设有多个加强板200。
在本公开中，第一方向为外壳100的高度，第二方向为外壳100的宽度方向，第三方向为外壳100的长度方向；或者，第二方向为外壳100的长度方向，第三方向为外壳100的宽度方向。其中第一方向为图中X方向，第二方向为图中Y方向，第三方向为图中Z方向。
然而，在其他实施例中，第一方向、第二方向和第三方向中的任意两者也可呈其他夹角设置，例如80°或者85°，对此，本公开不作具体限定。
需要说明的是，加强板200连接于顶板102和底板103，可以理解为，加强板200与顶板102及底板103一体成型；或者，加强板200、顶板102和底板103分别单独制成，然后再通过直接或者间接的连接方式进行连接，对此，本公开不作具体限定。
在一些实施例中，顶板102和底板103至少之一与加强板200一体成型。如此设置，不仅加工工艺简单，有利于降低生产成本，而且还可保证外壳100具有足够的结构强度和刚度，以满足外壳100的承重、抗撞击以及抗挤压等性能的要求。
具体的，顶板102、底板103和加强板200一体成型制成。例如，可采用一体式铝型材挤压成型。在另一实施例中，底板103与加强板200一体成型，然后顶板102再与加强板200焊接。或者，顶板102与加强板200一体成型，然后底板103再与加强板200焊接。
可以理解的，当每个加强板200连接于顶板102和底板103，每个加强板200、顶板102及底板103构成“工”字型结构，这样电池包10的外壳100整体呈蜂窝状结构，这种结构具有较高的强度和刚度，从而可满足外壳100的承重、抗撞击以及抗挤压等性能的要求。而且，外壳100的结构相对简单、空间利用率较高。当将这种电池包10安装到整车上时，该电池包10的结构强度可以作为整车结构强度的一部分，从而可提升整车的结构强度，有利于实现电动汽车整车轻量化的设计要求，同时也降低整车的设计和制造成本。
在进一步的实施例中，第一边梁106和第二边梁107上设有安装部104，安装部104用于与外部负载连接固定。
当然，在其他实施例中，安装部104也可设置顶板102或底板103上。
在一实施例中，如图1及图2所示，安装部104为设置在第一边梁106和第二边梁107上的安装孔105。安装孔105用于供紧固件(例如螺栓或铆钉)穿设，以将电池包10连接固定于外部负载上。
在一些实施例中，设置在第一边梁106上的安装孔105沿第一方向贯穿第一边梁106，设置在第二边梁107上的安装孔105沿第一方向贯穿第二边梁107。然而，安装孔105的轴向与第一方向也可呈夹角设置，例如5°或10°。
根据本公开的一些实施例，安装孔105设有多个，设置在第一边梁106上的安装孔105沿第一边梁106的长度方向依次排布。其中，第一边梁106的长度方向与第三方向平行。
同样，设置在第二边梁107上的安装孔105沿第二边梁107的长度方向依次排布。其中，第二边梁107的长度方向与第三方向平行。
当然，在另一实施例中，安装部104为设置在第一边梁106和第二边梁107上的吊环。吊环与外部负载固定连接，以将电池包10连接固定于外部负载上。
然而，在另一实施例中，安装部104为设置在第一边梁106和第二边梁107上的安 装块，安装块可通过焊接的方式固定于外部负载上。当然，安装块也可通过胶粘或卡接固定于外部负载上。
在一实施例中，容纳腔300沿第三方向的长度大于500mm，根据本公开的一些实施例，容纳腔300沿第三方向的长度为500mm-2500mm。如此设计，可容纳更多的电池或极芯组，以使电池包10满足较大的容量和较高的空间利用率的要求。
根据本公开的一些实施例，容纳腔300沿第三方向的长度为1000mm-2000mm。
根据本公开的一些实施例，容纳腔300沿第三方向的长度为1300mm-2200mm。
在一些实施例中，如图2、图5及图6所示，子壳体101具有沿第三方向相对的第一端和第二端，子壳体101的第一端和第二端至少之一设有开口110；外壳100还包括封闭开口110的端板111，每个开口110对应至少一个端板111。如此设置，当更换或检修时只需拆掉与子壳体101的开口110相对应的端板111即可，从而可简化操作。
其中，端板111密封子壳体101的开口110的方式不作具体限定，例如，端板111与子壳体101焊接以封闭子壳体101的开口110；或者，端板111与子壳体101粘接以封闭子壳体101的开口110；或者，端板111与子壳体101铆接或螺接，并且在端板111与子壳体101之间设置密封垫，以封闭子壳体101的开口110。
在本实施例中，每个子壳体101的第一端和第二端均设有开口110，每个开口110分别对应一个端板111。当然，在其他实施例中，每个开口110也可对应多个端板111，即多个端板111封闭子壳体101的一个开口110。
根据本公开的一些实施例，如图2及图5所示，位于壳主体115沿第三方向同一端的多个端板111为一体成型件。也即，位于壳主体115的第一端的多个端板111为一体成型件，或者，位于壳主体115的第二端的多个端板111为一体成型件，又或者，位于壳主体115的第一端的多个端板111以及位于壳主体115的第二端的多个端板111均为一体成型件。如此设置，可简化端板111的加工，有利于节约成本。
在一些实施例中，电池包外壳100为密封的外壳100，容纳腔300内的气压低于外壳100外的气压。如此设置，通过抽真空操作使容纳腔300内的气压低于外壳100外的气压，这样可降低外壳100内水汽等物质的存量，避免水汽的长期作用对外壳100内的极芯组、电池等零部件造成老化、损坏等影响，从而有利于提高电池包10的使用寿命。此外，密封的外壳100还可起到二次密封的效果。
在一实施例中，容纳腔300内的压力为-40Kpa至-70KPa。如此设置，可保证降低外壳100内的水汽、氧气等物质的存量，避免水汽、氧气对外壳100内部极芯组及各零部件的长时间老化作用，有利于提高外壳100内部极芯组及各零部件的使用寿命。
在一实施例中，外壳100上设有与容纳腔300连通的抽气孔。通过抽气孔可对外壳100内部进行抽真空操作，这样可降低外壳100内水汽等物质的存量，避免水汽的长期作用对外壳100内的电池或极芯组等零部件造成老化、损坏等影响，从而有利于提高电池包10的使用寿命。
在一些实施例中，外壳100上设有注胶孔112(如图2所示)，每个容纳腔300与至少一个注胶孔112对应连通，注胶孔112用于向对应的容纳腔300内填充胶，以将设于容纳腔300内的极芯组或电池与外壳100固定连接，以进一步提高电池包10的结构强度。在本实施例中，注胶孔112设置在子壳体101的顶板102上。当然，在其他实施例中，注胶孔112也可设置在子壳体101的底板103上。
在一些实施例中，如图1及图2所示，外壳100上设有防爆阀400，防爆阀400密封注胶孔112。这样，防爆阀400既可以充当密封注胶孔112的密封盖，还可起到安全防爆的作用。
在一些实施例中，如图7所示，防爆阀400具有薄弱区403；防爆阀400包括与外壳100密封连接的盖体402及设于盖体402上的凸起部401，凸起部401朝背离外壳100的一侧凸出，凸起部401的外周壁上形成有薄弱区403。这样，当电池包10内的极芯组异常工作而导致产气过多时，气压将会使防爆阀400的薄弱区403拉断，从而可避免电池包10出现安全事故。
需要说明的是，薄弱区403可以为凹槽或刻痕。或者，薄弱区403的厚度低于防爆阀400上其他部分的厚度。
根据本公开的一些实施例，注胶孔112设于顶板102上，盖体402与顶板102密封连接。对于该密封连接方式不作具体限定，例如，可通过焊接或胶粘的方式实现密封连接。
在一些实施例中，防爆阀400包括盖体402及设于在盖体402上的凸起部401，盖体402的边缘与注胶孔112的内壁连接，凸起部401自盖体402朝背离极芯组的一侧凸出。
在一些实施例中，如图8及图9所示，底板103上设有散热翅片113。根据本公开的一些实施例，散热翅片113与底板103一体成型。例如，底板103通过铝型材一体挤压形成散热翅片113。如此设置，可简化加工工艺，有利于降低成本。
在一些实施例中，如图10及图11所示，底板103上设有流道114。根据本公开的一些实施例，流道114一体形成于底板103。例如，底板103通过铝型材一体挤压形成流道114。如此设置，可简化加工工艺，有利于降低成本。
另一方面，本公开还提供一种电池包10，包括上述的电池包外壳100。本公开提供的电池包10，其采用上述的电池包外壳100，可增加电池包10设计的灵活性和通用性，从而有利于电池包10的标准化、模块化、以及批量化地生产制造。而且，上述的电池包外壳100具有较好的承重、抗冲击以及抗挤压的性能，从而使得电池包10具有较高的结构强度。
再一方面，本公开还提供一种电动车500(参照图12)，包括车体和和上述的电池包10，电池包10通过安装部104固定于车体。本公开提供的电动车500，当将这种电池包10安装到整车上时，该电池包10的结构强度可以作为整车结构强度的一部分，从而可提升整车的结构强度，有利于实现电动汽车整车。轻量化的设计要求，同时也降低整车的设计和制造成本。另外，本公开的电池包10的高度相对较低，这样不会过多占用车辆高度的空间。
以上实施例仅表达了本公开的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本公开专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本公开构思的前提下，还可以做出多个变形和改进，这些都属于本公开的保护范围。因此，本公开专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种电池包外壳，其中，所述外壳包括壳主体，所述壳主体包括多个相连的子壳体，至少一个所述子壳体内设有至少一个加强板；
    所述子壳体包括沿第一方向相对设置的顶板和底板，所述第一方向为所述外壳的高度方向，所述加强板位于所述顶板与所述底板之间，至少一个所述加强板连接于所述顶板和所述底板，至少一个所述加强板将对应的所述子壳体内部分隔成多个容纳腔；
    所述外壳上设有安装部，所述安装部用于与外部负载连接固定。
  2. 如权利要求1所述的电池包外壳，其中，所述外壳还包括沿第二方向分布于所述壳主体相对两侧的第一边梁和第二边梁，所述第二方向为所述外壳的宽度方向或所述外壳的长度方向。
  3. 如权利要求2所述的电池包外壳，其中，多个所述子壳体沿所述第二方向依次排布，多个所述子壳体中位于所述第二方向两端的子壳体为端部子壳体，两个所述端部子壳体中的一个与所述第一边梁连接，另一个与所述第二边梁连接。
  4. 如权利要求3所述的电池包外壳，其中，与所述第一边梁连接的端部子壳体和所述第一边梁一体成型，或者，与所述第二边梁连接的端部子壳体和所述第二边梁一体成型，又或者，与所述第一边梁连接的端部子壳体和所述第一边梁一体成型以及与所述第二边梁连接的端部子壳体和所述第二边梁一体成型。
  5. 如权利要求2所述的电池包外壳，其中，所述第一边梁和第二边梁至少之一内部具有空腔，所述空腔内设有隔板，所述隔板将所述空腔分隔成多个子腔。
  6. 如权利要求1-5中任一项所述的电池包外壳，其中，所述壳主体还包括连接板，所述连接板连接于两个相邻的所述子壳体之间。
  7. 如权利要求6所述的电池包外壳，其中，所述连接板内部具有空腔，所述空腔内设有隔板，所述隔板将所述空腔分隔成多个子腔。
  8. 如权利要求1所述的电池包外壳，其中，所述子壳体内设有多个加强板，多个所述加强板沿第二方向间隔分布，每个所述加强板的长度沿第三方向延伸，每个所述加强板连接于所述顶板和所述底板，所述第二方向为所述外壳的宽度方向，所述第三方向为所述外壳的长度方向；或者，所述第二方向为所述外壳的长度方向，所述第三方向为所述外壳的宽度方向。
  9. 如权利要求8所述的电池包外壳，其中，所述顶板和底板至少之一与所述加强板一体成型。
  10. 如权利要求1所述的电池包外壳，其中，所述容纳腔沿第三方向的长度大于500mm，所述第三方向为所述外壳的长度方向或所述外壳的宽度方向。
  11. 如权利要求1所述的电池包外壳，其中，所述子壳体具有沿第三方向相对的第一端和第二端，所述子壳体的第一端和第二端至少之一设有开口；所述外壳还包括封闭所述开口的端板，每个所述开口对应至少一个所述端板，所述第三方向为所述外壳的长度方向或所述外壳的宽度方向。
  12. 如权利要求11所述的电池包外壳，其中，位于所述壳主体沿所述第三方向同一端的多个端板为一体成型件。
  13. 根据权利要求1所述的电池包外壳，其中，所述外壳上设有注胶孔，每个所述容纳腔与至少一个所述注胶孔对应连通。
  14. 如权利要求13所述的电池包外壳，其中，所述外壳上设有防爆阀，所述防爆阀密封所述注胶孔。
  15. 如权利要求14所述的电池包外壳，其中，所述防爆阀具有薄弱区；所述防爆阀包括与所述外壳密封连接的盖体及设于所述盖体上的凸起部，所述凸起部朝背离所述外壳的一侧凸出，所述凸起部的外周壁上形成有所述薄弱区。
  16. 如权利要求1所述的电池包外壳，其中，所述底板上设有与外部连通的流道。
  17. 如权利要求1所述的电池包外壳，其中，所述底板上设有散热翅片。
  18. 如权利要求1所述的电池包外壳，其中，所述外壳还包括沿第二方向分布于所述壳主体相对两侧的第一边梁和第二边梁；
    每个所述子壳体内设有多个加强板，多个所述加强板沿第二方向间隔分布，每个所述加强板的长度沿第三方向延伸，每个所述加强板连接于所述顶板和所述底板；所述顶板和所述底板至少之一与所述加强板一体成型；
    所述子壳体具有沿第三方向相对的第一端和第二端，所述子壳体的第一端和第二端均设有开口，所述外壳还包括封闭所述开口的端板，每个所述开口对应至少一个所述端板；
    所述第二方向为所述外壳的宽度方向，所述第三方向为所述外壳的长度方向；或者，所述第二方向为所述外壳的长度方向，所述第三方向为所述外壳的宽度方向。
  19. 一种电池包，其中，包括如权利要求1-18任一项所述的电池包外壳。
  20. 一种电动车，其中，所述电动车包括车体和如权利要求19所述的电池包，所述电池包通过所述安装部固定于所述车体。
PCT/CN2020/128117 2020-05-22 2020-11-11 一种电池包外壳、电池包及电动车 WO2021232705A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2022571135A JP7451766B2 (ja) 2020-05-22 2020-11-11 電池パックケース、電池パック及び電気自動車
CA3178237A CA3178237A1 (en) 2020-05-22 2020-11-11 Battery pack housing, battery pack and electric vehicle
KR1020227044780A KR20230012631A (ko) 2020-05-22 2020-11-11 배터리 팩 하우징, 배터리 팩, 및 전기 차량
EP20936964.4A EP4156388A1 (en) 2020-05-22 2020-11-11 Battery pack housing, battery pack and electric vehicle
US17/989,608 US20230082924A1 (en) 2020-05-22 2022-11-17 Battery pack housing, battery pack, and electric vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010444233.6A CN113782899B (zh) 2020-05-22 2020-05-22 一种电池包外壳、电池包及电动车
CN202010444233.6 2020-05-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/989,608 Continuation US20230082924A1 (en) 2020-05-22 2022-11-17 Battery pack housing, battery pack, and electric vehicle

Publications (1)

Publication Number Publication Date
WO2021232705A1 true WO2021232705A1 (zh) 2021-11-25

Family

ID=78708904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/128117 WO2021232705A1 (zh) 2020-05-22 2020-11-11 一种电池包外壳、电池包及电动车

Country Status (7)

Country Link
US (1) US20230082924A1 (zh)
EP (1) EP4156388A1 (zh)
JP (1) JP7451766B2 (zh)
KR (1) KR20230012631A (zh)
CN (1) CN113782899B (zh)
CA (1) CA3178237A1 (zh)
WO (1) WO2021232705A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023133747A1 (zh) * 2022-01-13 2023-07-20 宁德时代新能源科技股份有限公司 电池、用电设备、制备电池的方法和设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107068925A (zh) * 2016-02-05 2017-08-18 福特全球技术公司 多单元集成壳体
CN207743300U (zh) * 2016-09-07 2018-08-17 昶洧新能源汽车发展有限公司 电池系统
CN207818635U (zh) * 2018-03-12 2018-09-04 宁德时代新能源科技股份有限公司 一种电池包
US20190006654A1 (en) * 2013-11-15 2019-01-03 Saft Groupe Sa Battery design with bussing integral to battery assembly
CN111293253A (zh) * 2020-04-24 2020-06-16 比亚迪股份有限公司 电池包及电动车
CN111312964A (zh) * 2020-04-24 2020-06-19 比亚迪股份有限公司 电池包及电动车
CN210984839U (zh) * 2020-04-24 2020-07-10 比亚迪股份有限公司 一种电池包箱体、电池包和电动车

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10020474B2 (en) 2011-04-12 2018-07-10 Hitachi Automotive Systems, Ltd. Cell block
CN202593253U (zh) 2012-03-20 2012-12-12 苏州益茂电动客车有限公司 纯电动公交车用快速电池箱
CN206225433U (zh) * 2016-11-14 2017-06-06 武汉天达汇能能源系统有限公司 一种适用于纯电动物流车电源系统的整体式电池箱
KR102162968B1 (ko) * 2017-04-07 2020-10-07 주식회사 엘지화학 확장형 배터리 모듈 구조를 갖는 배터리 팩
DE102017206988A1 (de) * 2017-04-26 2018-10-31 Mahle Lnternational Gmbh Akkumulatoranordnung
CN109428021B (zh) * 2017-08-31 2024-04-02 宁德时代新能源科技股份有限公司 框体以及电池模组
DE102017127807B4 (de) * 2017-11-24 2019-06-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batterieeinrichtung für ein wenigstens teilweise elektrisch betriebenes Kraftfahrzeug
IT201800002774A1 (it) * 2018-02-16 2019-08-16 Ferrari Spa Pacco batteria veicolare
CN209461508U (zh) * 2018-12-28 2019-10-01 蜂巢能源科技有限公司 电池包的边梁
CN110190211B (zh) 2018-12-29 2020-03-31 比亚迪股份有限公司 电池托盘、动力电池包及车辆
KR102483099B1 (ko) * 2019-01-09 2022-12-30 비와이디 컴퍼니 리미티드 배터리 팩 및 자동차
CN111106279B (zh) * 2019-08-02 2022-11-08 宁德时代新能源科技股份有限公司 电池包
CN111106282B (zh) * 2019-08-27 2021-06-11 宁德时代新能源科技股份有限公司 电池包
CN110911604B (zh) * 2019-12-03 2021-06-08 安徽江淮汽车集团股份有限公司 一种动力电池包

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190006654A1 (en) * 2013-11-15 2019-01-03 Saft Groupe Sa Battery design with bussing integral to battery assembly
CN107068925A (zh) * 2016-02-05 2017-08-18 福特全球技术公司 多单元集成壳体
CN207743300U (zh) * 2016-09-07 2018-08-17 昶洧新能源汽车发展有限公司 电池系统
CN207818635U (zh) * 2018-03-12 2018-09-04 宁德时代新能源科技股份有限公司 一种电池包
CN111293253A (zh) * 2020-04-24 2020-06-16 比亚迪股份有限公司 电池包及电动车
CN111312964A (zh) * 2020-04-24 2020-06-19 比亚迪股份有限公司 电池包及电动车
CN210984839U (zh) * 2020-04-24 2020-07-10 比亚迪股份有限公司 一种电池包箱体、电池包和电动车

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023133747A1 (zh) * 2022-01-13 2023-07-20 宁德时代新能源科技股份有限公司 电池、用电设备、制备电池的方法和设备

Also Published As

Publication number Publication date
CN113782899A (zh) 2021-12-10
CN113782899B (zh) 2024-05-07
KR20230012631A (ko) 2023-01-26
EP4156388A1 (en) 2023-03-29
JP2023525923A (ja) 2023-06-19
CA3178237A1 (en) 2021-11-25
US20230082924A1 (en) 2023-03-16
JP7451766B2 (ja) 2024-03-18

Similar Documents

Publication Publication Date Title
CN111430596B (zh) 动力电池包及电动车
CN111293253B (zh) 电池包及电动车
CN210984839U (zh) 一种电池包箱体、电池包和电动车
CN111312964B (zh) 电池包及电动车
WO2021232705A1 (zh) 一种电池包外壳、电池包及电动车
CN113782877A (zh) 电池包及电动车
CN116868424A (zh) 箱体及电池包
CN214112706U (zh) 电动汽车
CN113782903B (zh) 电池包及具有该电池包的车辆
WO2021232680A1 (zh) 一种电池包及电动车
KR20230021707A (ko) 배터리 팩 및 전기 차량
CN113644350A (zh) 电池包及电动车
CN113782898A (zh) 电池包箱体、电池包及电动车
CN217691521U (zh) 电池模组及电池包
CN217823075U (zh) 一种矩形承压壳体、电池外壳及大容量电池
CN218241976U (zh) 电池模组及动力电池包
CN217788697U (zh) 电池包和具有其的车辆
CN219642981U (zh) 电池包和车辆
CN218241975U (zh) 电池模组
CN113782901A (zh) 电池包及电动车
CN116130877A (zh) 一种电池包
CN115411425A (zh) 电池包和车辆

Legal Events

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

Ref document number: 20936964

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3178237

Country of ref document: CA

ENP Entry into the national phase

Ref document number: 2022571135

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20227044780

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020936964

Country of ref document: EP

Effective date: 20221222