WO2024045754A1 - 电池模组及电池箱 - Google Patents

电池模组及电池箱 Download PDF

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Publication number
WO2024045754A1
WO2024045754A1 PCT/CN2023/099056 CN2023099056W WO2024045754A1 WO 2024045754 A1 WO2024045754 A1 WO 2024045754A1 CN 2023099056 W CN2023099056 W CN 2023099056W WO 2024045754 A1 WO2024045754 A1 WO 2024045754A1
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WO
WIPO (PCT)
Prior art keywords
liquid cooling
battery
battery module
cooling plate
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/099056
Other languages
English (en)
French (fr)
Inventor
田原松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eve Energy Co Ltd
Original Assignee
Eve Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202310591492.5A external-priority patent/CN116544558A/zh
Priority claimed from CN202321272237.6U external-priority patent/CN219959144U/zh
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Publication of WO2024045754A1 publication Critical patent/WO2024045754A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the 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
    • H01M10/65—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
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
    • H01M10/65—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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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

  • This application relates to the field of battery technology, for example, to a battery module and a battery box.
  • the battery box is usually equipped with a box body, an array of battery cells and a liquid cooling plate.
  • the battery cells and liquid cooling plate are both installed in the box body.
  • liquid cooling plates are respectively arranged on the top and bottom of the battery core to cool the battery core.
  • the liquid cooling plate cannot fully contact the battery core for heat exchange, and the heat dissipation efficiency of the battery box is low; on the other hand, the support structure of the liquid cooling plate and the water inlet and outlet at the end of the liquid cooling plate
  • the complex structure not only makes the assembly efficiency of the battery box low, but also makes the manufacturing cost of the battery box high.
  • the liquid cooling plate can fully contact the battery core for heat exchange, and the heat dissipation efficiency is high.
  • the support assembly can not only support the liquid cooling plate, but also conduct multiple channels in the liquid cooling plate.
  • the structure of the battery box is simple and easy to assemble.
  • a battery module including:
  • a plurality of battery cells arranged in at least two rows of battery cells along the first direction, and the battery core rows extend along the second direction;
  • At least one liquid cooling plate one liquid cooling plate is provided between two adjacent rows of battery cells, and a liquid cooling channel is provided in the liquid cooling plate;
  • a manifold cavity is provided in the support assembly, the manifold cavity is configured to communicate with the outside through a liquid port, and the two ends of each liquid cooling plate along the second direction are respectively supported on the two on the support assembly, and the first end and the second end of the liquid cooling channel are respectively connected with the two manifold cavities.
  • the support assembly includes a lower support base and an upper support base, and the upper support base is fastened to the lower support base to form the bus chamber and a plurality of installation slots.
  • the slot is located on a side of the support assembly facing the liquid cooling plate and is connected with the manifold chamber. Each end of each liquid cooling plate is plugged into an installation slot.
  • the support assembly further includes:
  • the first sealing member includes a first sealing part and a second sealing part.
  • the first sealing part is sandwiched between the upper support seat and the lower support seat and is surrounding the manifold chamber.
  • the second sealing portion is sandwiched between the side wall of the mounting slot and the side wall of the liquid cooling plate; and/or
  • a second sealing member is sandwiched between the side wall of the installation slot and the side wall of the liquid cooling plate.
  • the lower support base is provided with a first half cavity and a plurality of first half grooves on one side facing the upper support base
  • the upper support base is provided with a first half cavity on one side facing the lower support base.
  • the second half cavity and a plurality of second half slots, the first half cavity and the second half cavity constitute the bus chamber, and each second half slot corresponds to a first half slot to form an installation slot.
  • the support component is formed with a stop end face, the stop end face is arranged perpendicular to the second direction, and the end face of the battery cell row perpendicular to the second direction corresponds to the end face.
  • the stop end surfaces of the support assembly are against each other.
  • the liquid cooling plate includes:
  • the main part is arranged between two adjacent rows of battery cells
  • Two supporting parts are connected to the lower end of the main body part and extend to the first side and the second side of the main body part respectively, so as to be configured into a " ⁇ "-shaped structure with the main body part, with two adjacent rows of electrical cables.
  • the core rows are respectively supported on the two supporting parts.
  • two ends of the main body portion along the second direction protrude from the supporting portion respectively to form two plug-in ends, and the two plug-in ends protrude from the said support portion respectively.
  • Two ends of the battery cell row along the second direction are respectively inserted into the two support components.
  • a thermally conductive adhesive layer is provided between the main body part and the battery cores on each of the first and second sides of the main body part, and is adhesively connected through the thermally conductive adhesive layer.
  • the battery module further includes two side plates arranged oppositely, the side plates are arranged perpendicular to the first direction, and the at least two rows of battery cells are sandwiched between the two sides. Between the plates, two ends of the side plate along the second direction are respectively supported on the two support assemblies.
  • the side panels include:
  • the main body part is arranged in close contact with the at least two rows of battery cells;
  • a supporting plate is connected to the lower end of the main body and extends along the first direction toward the side close to the at least two rows of battery cells.
  • the at least two rows of battery cells are supported on two supports. on the board.
  • the side panel further includes:
  • Two mounting parts are respectively provided at the first end and the second end of the body part, and the two mounting parts are respectively connected to the two support assemblies; and/or
  • connection protrusion is provided on a side of the body part away from the at least two rows of battery cells, and the connection protrusion is configured to be connected to the box body of the battery box.
  • the battery core is a square battery core, and the battery core has a set of oppositely arranged largest side surfaces with the largest area, and the largest side surfaces are in contact with the liquid cooling plate corresponding to the largest side surface. set up.
  • embodiments of the present application provide a battery box, including a box body and the battery module, and the battery module is disposed in the box body.
  • a glue layer is filled between the bottom of the battery module and the bottom of the box.
  • a liquid cooling plate is arranged between two adjacent rows of battery cells, so that the liquid cooling plate can fully contact each battery cell for heat exchange, thereby improving the heat dissipation efficiency; the cooperation of the two support components can Multiple liquid cooling plates are supported, and the converging cavity in the support assembly can merge the liquid cooling channels in the multiple liquid cooling plates. Therefore, one of the liquid cooling ports is used as the liquid inlet and the other liquid port is used as the liquid outlet.
  • the coolant supply in multiple liquid cooling plates can be realized through the opening.
  • the structure is simple, easy to assemble, and can reduce the manufacturing cost of the battery module.
  • the battery box of the present application has high heat dissipation efficiency, simple structure and low cost by installing the above-mentioned battery module.
  • Figure 1 is a schematic structural diagram of a battery box provided by a specific embodiment of the present application.
  • FIG. 2 is an exploded view of the battery box provided by the specific embodiment of the present application.
  • Figure 3 is an exploded view of a partial structure of the battery module provided by the specific embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of the battery cell row and liquid cooling plate provided by the specific embodiment of the present application.
  • Figure 5 is a left view of the cell row and liquid cooling plate provided by the specific embodiment of the present application.
  • FIG. 6 is a partial structural schematic diagram of the battery module provided by the specific embodiment of the present application.
  • Figure 7 is an exploded view of the support assembly provided by the specific embodiment of the present application.
  • Figure 8 is a schematic diagram of the exploded structure of the battery module provided by the specific embodiment of the present application.
  • FIG. 9 is a schematic cross-sectional structural diagram of the battery box provided by the specific embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a support assembly provided by a specific embodiment of the present application.
  • Liquid cooling plate 21. Main part; 211. Liquid cooling channel; 212. Plug-in end; 22. Supporting part;
  • Support component 31. Lower support seat; 311. First half groove; 312. First half cavity; 313. First stop surface; 314. First mounting hole; 315. Sixth mounting hole; 316. Two half cavities; 32. Upper support seat; 321. Second half groove; 322. Second stop surface; 324. Second mounting hole; 325. Fourth mounting hole; 326. Fifth mounting hole; 33. Manifold chamber ; 34. Installation slot; 35. First seal; 351. First sealing part; 352. Second sealing part; 36. Second sealing part; 37. Stop end face; 38. Liquid port;
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • connection can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • a first feature on a second feature may include the first feature being in direct contact with the second feature, or it may also include the first feature being in direct contact with the second feature. Two features are not in direct contact but are in contact through another feature between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the battery box includes a battery module 10 and a box 20 , and the battery module 10 is installed in the box 20 .
  • the upper end of the box 20 is open, and the battery module 10 can be put into the box 20 through the opening.
  • the battery box also includes a cover (not shown), which can block the opening of the box 20 .
  • a battery module 10 is accommodated in the box 20 of the battery box as an example for description. It can be understood that in other embodiments, the box 20 can also accommodate two or more battery modules 10 .
  • the first direction, the second direction and the third direction are defined as three mutually perpendicular directions in space.
  • the X direction represents the first direction
  • the Y direction represents the second direction
  • the Z direction represents the third direction. three directions.
  • the first direction and the second direction are both directions in the horizontal plane
  • the Z direction is the vertical direction.
  • the battery module 10 includes a plurality of cells 11 , at least one liquid cooling plate 2 and two support assemblies 3 .
  • the plurality of battery cells 11 are arranged in at least two rows of battery cells 1 along the first direction (ie, the Each cell has 11 cells.
  • a liquid cooling plate 2 is provided between two adjacent rows of battery cells 1 , and a liquid cooling channel 211 is provided in the liquid cooling plate 2 .
  • Two support components 3 are respectively provided at both ends of the plurality of battery cells 11 along the second direction.
  • a bus chamber 33 is provided in the support component 3.
  • a liquid port 38 is also provided on the support component 3.
  • the manifold chamber 33 is connected, and the other end of the liquid port 38 is connected with the outside of the support assembly 3 . Both ends of each liquid cooling plate 2 along the second direction are respectively supported on two support assemblies 3 .
  • the first end and the second end of the liquid cooling channel 211 are respectively connected with the manifold cavities 33 on the two support assemblies 3 . Therefore, for the battery module 10, the liquid port 38 of the first support component 3, the manifold chamber 33 of the first support component 3, the liquid cooling channel 211 of the liquid cooling plate 2, and the manifold of the second support component 3
  • the cavity 33 and the liquid port 38 of the second support component 3 are connected in sequence, thereby forming a continuous liquid channel.
  • the cooling liquid can be introduced into the liquid channel to cool down the battery core 11 .
  • the battery module 10 of this embodiment disposes the liquid cooling plate 2 between two adjacent rows of battery cells 1, so that the liquid cooling plate 2 can fully contact each battery cell 11 for heat exchange, thereby improving heat dissipation.
  • Efficiency two support components 3 can support multiple liquid cooling plates 2 in cooperation, and the converging chamber 33 in the support component 3 can combine the liquid cooling channels 211 in multiple liquid cooling plates 2. Therefore, one support component 3
  • the liquid port 38 is used as a liquid inlet, and the liquid port 38 of the other support component 3 is used as a liquid outlet to realize the supply of cooling liquid in multiple liquid cooling plates 2.
  • the battery module 10 has a simple structure and is easy to assemble. , and can reduce the manufacturing cost of the battery module 10 .
  • a plurality of battery cells 11 are arranged in four rows of battery cells 1 along the first direction.
  • Each row of battery cells 1 includes four battery cells 11 .
  • there are three liquid cooling plates 2 each of which has four battery cells 11 .
  • the liquid cooling plate 2 is arranged between two adjacent rows of battery cells 1 .
  • the number of rows of battery cells 1 and the The number of battery cells 11 included in the battery cell row 1 and the total number of battery cells 11 included in the battery module 10 are arranged.
  • the battery core 11 is a square battery core, so the battery core 11 has three sets of oppositely arranged sides. The side with the largest area among the three sets of sides is defined as the largest side 111.
  • the square battery The largest side 111 of the core is arranged in close contact with the liquid cooling plate 2 corresponding to the largest side 111 . Therefore, each battery cell 11 can have as large a surface as possible to contact the liquid cooling plate 2 for heat exchange, thereby improving the heat dissipation efficiency of the battery module 10 .
  • the battery core 11 and the liquid cooling plate 2 are connected through a thermally conductive adhesive layer 4.
  • a thermally conductive adhesive layer 4 can be fixed as one structural member. Therefore, the operation is more convenient when connecting the structural member to the support assembly 3.
  • selecting the connection method of the thermally conductive adhesive layer 4 can also ensure a good heat exchange effect between the battery core 11 and the liquid cooling plate 2 . It can be understood that the thermally conductive adhesive layer 4 is not specifically limited here.
  • the liquid cooling plate 2 includes a main body part 21 and two supporting parts 22 , where the main body part 21 is disposed between two adjacent rows of battery cell rows 1 .
  • the main body part 21 is arranged in contact with the largest side surface 111 of the battery core 11 .
  • the two supporting portions 22 are connected to the lower end of the main body portion 21 .
  • the two supporting portions 22 respectively extend in the first direction toward the first side and the second side of the main body portion 21 .
  • the main body portion 21 is configured with the two supporting portions 22 It is a " ⁇ "-shaped structure, and two adjacent rows of battery cells 1 are respectively supported on the two supporting parts 22 of the liquid cooling plate 2 .
  • the bonding of the main body part 21 and the surface of the battery core 11 by the thermally conductive adhesive layer 4 and the support of the lower surface of the battery core 11 by the supporting part 22 work together to make the structure of the battery core 11 and the liquid cooling plate 2 strong.
  • the middle position of the structural part along the length direction is not easy to sink (that is, the middle of the structural part is not easy to arc), ensuring the shape accuracy of the structural part. This ensures the position accuracy of the poles on the battery core 11 and the subsequent welding accuracy of the poles and other components.
  • the liquid cooling plate 2 is formed by extrusion.
  • the extrusion process can not only directly form the " ⁇ " shape of the liquid cooling plate 2, but also directly form the liquid cooling channel 211 in the liquid cooling plate 2, which is easy to form and has low manufacturing cost.
  • multiple liquid cooling channels 211 are formed in each liquid cooling plate 2 , and the multiple liquid cooling channels 211 are all provided on the main body 21 .
  • a plurality of liquid cooling channels 211 are arranged in parallel and arranged along the third direction (ie, the Z direction), thereby ensuring uniform heat exchange at each position of the battery core 11 along the Z direction.
  • the openings at both ends of the liquid cooling channel 211 are respectively provided on the end surfaces of the two ends of the main body 21 along the second direction.
  • two ends of the main body part 21 along the second direction protrude from the supporting part 22 respectively to form two plug-in ends 212 , and the two plug-in ends 212 protrude respectively.
  • the two ends of the battery cell row 1 along the second direction are respectively plugged into the support components 3 at both ends, thereby realizing that the two ends of the liquid cooling plate 2 are supported on the two support components 3 respectively, and ensuring that both sides of the liquid cooling channel 211
  • the openings at the two ends respectively extend into the interior of the two support components 3 to realize communication between the liquid cooling channel 211 and the manifold cavity 33 in the support component 3 .
  • the support assembly 3 includes a lower support base 31 and an upper support base 32.
  • the upper support base 32 is fastened to the lower support base 31 to form a manifold cavity 33 and a plurality of installation slots. 34.
  • the installation slot 34 is located on the side of the support assembly 3 facing the liquid cooling plate 2.
  • Each installation slot 34 is connected with the manifold cavity 33.
  • Each end of each liquid cooling plate 2 is plugged into an installation slot. slot 34. That is, the plug end 212 of each liquid cooling plate 2 is correspondingly plugged into an installation slot 34, so the liquid cooling channel 211 can be connected to the manifold cavity 33 through the installation slot 34.
  • the lower support base 31 is provided with a first mounting hole 314.
  • the upper support base 32 is provided with a second mounting hole 324.
  • the first fasteners are arranged in sequence from top to bottom. After the second mounting hole 324 and the first mounting hole 314 are penetrated, the upper support base 32 and the lower support base 31 are connected.
  • the first fastener may be a bolt, and the second mounting hole 324 may be a threaded hole.
  • the method of connecting the upper support base 32 and the lower support base 31 through bolts is not only convenient for installation, but also facilitates subsequent disassembly, assembly, and maintenance.
  • the lower support base 31 is provided with a first half cavity 312 and a plurality of first half grooves 311 on the side facing the upper support base 32
  • the upper support base 32 is provided on the side facing the lower support base 31
  • There is a second half cavity 316 (as shown in Figure 10) and a plurality of second half slots 321.
  • each second half-slot 321 is correspondingly engaged with a first half-slot 311 and forms a mounting slot 34 .
  • the number of the first half grooves 311 and the number of the second half grooves 321 is consistent with the number of the liquid cooling plates 2 .
  • a plurality of first half-slots 311 are arranged at intervals along the first direction, and a plurality of second half-slots 321 are also arranged at intervals along the first direction, thereby ensuring that the liquid cooling plate 2 can be inserted into the installation slot 34 in a one-to-one correspondence.
  • the first half groove 311 extends along the third direction, and every position along the third direction is connected with the first half cavity 312.
  • the second half groove 321 extends along the third direction, and each position along the third direction is connected to the first half cavity 312.
  • Each position is connected to the second half cavity 316, so when the liquid cooling plate 2 is inserted into the installation slot 34, multiple liquid cooling channels 211 arranged along the third direction can all be connected with the manifold chamber 33.
  • the liquid passing port 38 is provided on the upper support base 32 , and the liquid passing port 38 is connected with the second half cavity 316 , thereby realizing the communication between the liquid passing port 38 and the manifold chamber 33 .
  • the liquid port 38 can also be provided on the lower support base 31 , and the liquid port 38 is connected with the first half cavity 312 .
  • the support assembly 3 is formed with a stop end face 37 , the stop end face 37 is arranged perpendicular to the second direction, and the end face of the cell row 1 perpendicular to the second direction corresponds to the end face.
  • the stop end surface 37 of the support component 3 is against each other.
  • the lower support seat 31 is provided with a first stop surface 313, and the upper support seat 32 is provided with a second stop surface 322.
  • the first stop surface 313 and the second stop surface are The surfaces 322 are coplanar and together form the stop end surface 37 .
  • the stop end surface 37 may also be configured to include only the first stop surface 313 or only the second stop surface 322 .
  • the support assembly 3 also includes a sealing assembly, which is configured to seal the connection between the liquid cooling plate 2 and the manifold chamber 33 .
  • the support assembly 3 is configured to include a lower support base 31 and an upper support base 32 to facilitate the installation of the sealing assembly and thereby ensure the reliability of the seal.
  • the sealing assembly includes a first sealing member 35.
  • the first sealing member 35 includes a first sealing part 351 and a second sealing part 352.
  • the first sealing part 351 is sandwiched between the upper support seat 32 and the lower support seat 32. between the support bases 31 and ringed in the manifold cavity 33, thereby sealing the gap between the upper support base 32 and the lower support base 31, preventing coolant from leaking from the gap, and improving the safety of the battery module 10 .
  • the second sealing part 352 is sandwiched between the side wall of the installation slot 34 and the side wall of the liquid cooling plate 2 to seal the installation gap between the liquid cooling plate 2 and the installation slot 34 to prevent the cooling liquid from flowing out. Liquid leakage is eliminated, further improving the safety of the battery module 10 .
  • the first sealing member 35 is integrally formed.
  • the first sealing part 351 and the second sealing part 352 may also be configured as separate molding structures.
  • the second seal part 352 is only provided between the side wall of the first half groove 311 and the side wall of the liquid cooling plate 2 .
  • the battery module 10 of this embodiment further includes a second seal 36 , and the second seal 36 is sandwiched between the side wall of the second half groove 321 and the side wall of the liquid cooling plate 2 . Therefore, the cooperation between the second sealing portion 352 and the second sealing member 36 jointly achieves sealing of the gap between the installation slot 34 and the liquid cooling plate 2 . It can be understood that those skilled in the art can choose to set the cross-sectional shapes of the first seal 35 and the second seal 36 according to actual sealing requirements, which are not specifically limited here.
  • the battery module 10 further includes two opposite side plates 5 , the side plates 5 are arranged perpendicular to the first direction, and at least two rows of battery cells 1 are sandwiched between the two side plates 5 In between, both ends of the side plate 5 along the second direction are respectively supported on the two support assemblies 3 . That is to say, the two side plates 5 clamp the structural member composed of multiple battery cells 11 and the liquid cooling plate 2 along at least the first direction and fix it on the support assembly 3, thereby making the overall structure of the battery module 10 strong and reliable.
  • the side plate 5 includes a body part 51 and two mounting parts 52 .
  • the body part 51 is arranged in close contact with at least two rows of battery cells 1 .
  • the two mounting parts 52 are respectively arranged at the first end of the body part 51 . and the second end, the two mounting parts 52 are respectively connected to the two support assemblies 3, so the two body parts 51 can clamp the above-mentioned structural member along the first direction, and make the structural member, the two support assemblies 3 and the two The side panels 5 form a solid whole.
  • the mounting portion 52 protrudes from the side surface of the body portion 51 , and the mounting portion 52 overlaps the upper surface of the support component 3 .
  • the mounting part 52 is provided with a third mounting hole 521, and the support component 3 is provided with a fourth mounting hole 325 at a corresponding position.
  • the second fastener passes through the third mounting hole 521 and the fourth mounting hole 325 in sequence, and then the side plate 5 is It is fixed to the upper support base 32.
  • the second fastener is a bolt
  • the fourth mounting hole 325 is a threaded hole
  • the second fastener is threadedly connected to the fourth mounting hole 325 .
  • the fourth mounting hole 325 may be configured as a hole that only penetrates the upper support base 32 , or may be configured as a hole that penetrates the upper support base 32 and then continues to extend into the lower support base 31 .
  • the side plate 5 also includes a supporting plate 54 , which is connected to the lower end of the body part 51 and faces toward at least two rows of battery cells 1 along the first direction. Extending on one side, at least two rows of battery cells 1 are supported on two supporting plates 54 .
  • the supporting portion 22 can support the structural member composed of the cell row 1 and the liquid cooling plate 2 in the third direction, so that the battery module 10 as a whole has better structural strength.
  • the middle part of the battery module 10 along its length direction can be prevented from sinking and arcing, thereby ensuring that the battery module 10 can be accurately connected to other parts in the future. parts to fit together.
  • the battery module 10 is fixed inside the box 20 through fasteners, and the connection is reliable, the structure is simple, and the operation is easy.
  • the side plate 5 also includes a connecting protrusion 53 .
  • the connecting protrusion 53 is disposed on a side of the main body 51 away from at least two rows of battery cells 1 .
  • the connecting protrusion 53 is disposed to connect with the box body 20 of the battery box. connect.
  • the connecting protrusion 53 extends along the second direction.
  • the upper support base 32 is provided with a fifth installation hole 326
  • the lower support base 31 is provided with a sixth installation hole 315.
  • the fifth installation hole 326 is provided.
  • the hole 326 and the sixth mounting hole 315 are arranged opposite to each other.
  • a plurality of seventh mounting holes 531 are provided on the connecting protrusion 53 .
  • the battery box also includes a third fastener and a fourth fastener, wherein the third fastener can lock the support assembly 3 on the box 20 after passing through the fifth mounting hole 326 and the sixth mounting hole 315 in sequence. After the four fasteners pass through the seventh mounting hole 531, the side plate 5 can be locked at the bottom of the box 20. That is to say, the entire battery module 10 can be reliably fixed in the box 20 through the third fastener and the fourth fastener.
  • a circle of bosses 201 are provided at the bottom of the box 20. After the battery module 10 is placed in the box 20, the connecting boss 53 and the support assembly 3 are connected respectively. Supported on the boss 201.
  • a plurality of threaded holes 202 are provided on the boss 201, and the plurality of threaded holes 202 are respectively arranged opposite to the plurality of sixth mounting holes 315 or the plurality of seventh mounting holes 531.
  • Both the third fastener and the fourth fastener can be bolts.
  • the third fastener is connected to the third fastener after passing through the fifth mounting hole 326 and the sixth mounting hole 315.
  • the corresponding threaded holes 202 are connected, and the fourth fastener is threadedly connected with the corresponding threaded hole 202 of the fourth fastener after passing through the seventh mounting hole 531 .
  • a glue layer 30 is filled between the bottom of the battery module 10 and the bottom of the box 20 .
  • the glue layer 30 By providing the glue layer 30 , the connection between the battery module 10 and the box 20 can be ensured. Firmly, it prevents the battery module 10 from moving relative to the box 20, and it can fully support the bottom of the battery module 10, preventing the battery module 10 from sinking in the middle along its length during use. arc.

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Abstract

本申请涉及电池技术领域，公开了一种电池模组及电池箱。电池箱包括箱体和电池模组，电池模组包括多个电芯、至少一个液冷板和两个支撑组件，多个电芯沿第一方向排布为至少两排电芯排，电芯排沿第二方向延伸且包括多个电芯，相邻的两排电芯排之间设置有一个液冷板，液冷板内设置有液冷通道，支撑组件内设置有汇流腔，汇流腔设置为通过过液端口与外部连通，每个液冷板沿第二方向的两端分别支撑在两个支撑组件上，且液冷通道的第一端和第二端分别与两个汇流腔相连通。本申请的电池模组和电池箱，液冷板能充分与电芯接触换热，散热效率高，支撑组件既能支撑液冷板，又能对多个液冷板内通道进行汇流，结构简单、易于装配。

Description

电池模组及电池箱
本申请要求在2023年05月24日提交中国专利局、申请号为202310591492.5以及202321272237.6的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，例如涉及一种电池模组及电池箱。
背景技术
方形电池箱作为动力源，广泛应用于汽车、船舶等交通工具领域中。电池箱通常设置有箱体、阵列排布的电芯和液冷板，电芯和液冷板均安装在箱体内。相关技术中，液冷板分别设置在电芯的顶部和底部，从而用于对电芯进行降温。但是这种设置方式中，一方面，液冷板无法充分与电芯进行接触换热，电池箱的散热效率低；另一方面，液冷板的支撑结构、液冷板端部的进出水部分结构复杂，不仅使电池箱的装配效率低，且使电池箱的制造成本高。
发明内容
本申请提出了一种电池模组和电池箱，液冷板能充分与电芯接触换热，散热效率高，支撑组件既能支撑液冷板，又能对液冷板内的多条通道进行汇流，电池箱的结构简单、易于装配。
第一方面，本申请实施例提供了一种电池模组，包括：
多个电芯，沿第一方向排布为至少两排电芯排，所述电芯排沿第二方向延伸；
至少一个液冷板，相邻的两排电芯排之间设置有一个液冷板，所述液冷板内设置有液冷通道；
两个支撑组件，所述支撑组件内设置有汇流腔，所述汇流腔设置为通过过液端口与外部连通，每个液冷板沿所述第二方向的两端分别支撑在所述两个支撑组件上，且所述液冷通道的第一端和第二端分别与两个汇流腔相连通。
在一实施例中，所述支撑组件包括下支撑座和上支撑座，所述上支撑座扣合于所述下支撑座，以形成所述汇流腔和多个安装插槽，所述安装插槽位于所述支撑组件朝向所述液冷板的一侧，且与所述汇流腔相连通，每个液冷板的每个端部插接于一个安装插槽。
在一实施例中，所述支撑组件还包括：
第一密封件，包括第一密封部和第二密封部，所述第一密封部夹设在所述上支撑座和所述下支撑座之间，且环设于所述汇流腔，所述第二密封部夹设在所述安装插槽的侧壁与所述液冷板的侧壁之间；和/或
第二密封件，所述第二密封件夹设在所述安装插槽的侧壁与所述液冷板的侧壁之间。
在一实施例中，所述下支撑座朝向所述上支撑座的一侧设置有第一半腔和多个第一半槽，所述上支撑座朝向所述下支撑座的一侧设置有第二半腔和多个第二半槽，所述第一半腔和所述第二半腔构成所述汇流腔，每个第二半槽对应与一个第一半槽构成一个安装插槽。
在一实施例中，所述支撑组件形成有止挡端面，所述止挡端面垂直于所述第二方向设置，所述电芯排垂直于所述第二方向的端面与所述端面对应的所述支撑组件的所述止挡端面相抵。
在一实施例中，所述液冷板包括：
主体部，设置在相邻两排电芯排之间；
两个承托部，连接于所述主体部的下端并分别向所述主体部的第一侧和第二侧延伸，以与所述主体部构造为“丄”型结构，相邻两排电芯排分别承托在所述两个承托部上。
在一实施例中，所述主体部沿所述第二方向的两端分别凸出于所述承托部，以形成两个插接端，所述两个插接端分别凸出于所述电芯排沿所述第二方向的两端并分别插接于所述两个支撑组件。
在一实施例中，所述主体部与所述主体部的第一侧和第二侧中每侧的电芯之间设置有导热胶层，并通过所述导热胶层粘接连接。
在一实施例中，所述电池模组还包括两个相对设置的侧板，所述侧板垂直于所述第一方向设置，所述至少两排电芯排夹设在所述两个侧板之间，所述侧板沿所述第二方向的两端分别支撑在所述两个支撑组件上。
在一实施例中，所述侧板包括：
本体部，与所述至少两排电芯排贴合设置；
承托板，连接于所述本体部的下端，且沿所述第一方向朝靠近所述至少两排电芯排的一侧延伸，所述至少两排电芯排承托在两个承托板上。
在一实施例中，所述侧板还包括：
两个安装部，所述两个安装部分别设置在所述本体部的第一端和第二端，所述两个安装部分别与所述两个支撑组件连接；和/或
连接凸部，所述连接凸部设置在所述本体部背离所述至少两排电芯排的一侧，所述连接凸部被配置为与电池箱的箱体连接。
在一实施例中，所述电芯为方形电芯，所述电芯具有一组相对设置且面积最大的的最大侧面，所述最大侧面与所述最大侧面对应的所述液冷板贴合设置。
第二方面，本申请实施例提供了一种电池箱，包括箱体和所述的电池模组，所述电池模组设置在所述箱体中。
在一实施例中，所述电池模组的底部与所述箱体的底部之间填充有胶水层。
本申请有益效果为：
本申请的电池模组，通过在相邻两排电芯排之间设置液冷板，使液冷板能充分与每个电芯接触换热，提高了散热效率；两个支撑组件配合可以对多个液冷板进行支撑，且支撑组件内的汇流腔可以将多干液冷板内的液冷通道进行汇流，故将其中一个过液端口作为进液口，另一个过液端口作为出液口即可实现多个液冷板内冷却液的供应，结构简单，便于进行装配，且能降低电池模组的制造成本。
本申请的电池箱，通过设置上述的电池模组，散热效率高、结构简单、成本低。
附图说明
图1是本申请具体实施方式提供的电池箱的结构示意图；
图2是本申请具体实施方式提供的电池箱的爆炸图；
图3是本申请具体实施方式提供的电池模组部分结构的爆炸图；
图4是本申请具体实施方式提供的电芯排和液冷板的结构示意图；
图5是本申请具体实施方式提供的电芯排和液冷板的左视图；
图6是本申请具体实施方式提供的电池模组的局部结构示意图；
图7是本申请具体实施方式提供的支撑组件的爆炸图；
图8是本申请具体实施方式提供的电池模组的分解结构示意图；
图9是本申请具体实施方式提供的电池箱的剖面结构示意图；
图10是本申请具体实施例方式提供的支撑组件的结构示意图。
图中：
10、电池模组；
1、电芯排；11、电芯；111、最大侧面；
2、液冷板；21、主体部；211、液冷通道；212、插接端；22、承托部；
3、支撑组件；31、下支撑座；311、第一半槽；312、第一半腔；313、第一止挡面；314、第一安装孔；315、第六安装孔；316、第二半腔；32、上支撑座；321、第二半槽；322、第二止挡面；324、第二安装孔；325、第四安装孔；326、第五安装孔；33、汇流腔；34、安装插槽；35、第一密封件；351、第一密封部；352、第二密封部；36、第二密封件；37、止挡端面；38、过液端口；
4、导热胶层；
5、侧板；51、本体部；52、安装部；521、第三安装孔；53、连接凸部；531、第七安装孔；54、承托板；
20、箱体；201、凸台；202、螺纹孔；
30、胶水层。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”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，可以视具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或“之下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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 此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
本实施例提供了一种电池模组及电池箱，如图1所示，电池箱包括电池模组10和箱体20，且电池模组10安装在箱体20内。本实施例中，箱体20的上端开口，电池模组10能自开口放入箱体20中。电池箱还包括盖体(未图示)，盖体能封堵箱体20的开口。本实施例中，以电池箱的箱体20内容纳有一个电池模组10为例进行说明。可以理解的是，其他实施例中，箱体20内也可以容纳两个或者多个电池模组10。为便于说明，定义第一方向、第二方向和第三方向为空间内两两相互垂直的三个方向，其中图2中X向表示第一方向，Y向表示第二方向，Z向表示第三方向。本实施例中，第一方向和第二方向均为水平面内的方向，Z向为竖直方向。
如图2至图4所示，电池模组10包括多个电芯11、至少一个液冷板2和两个支撑组件3。其中多个电芯11沿第一方向(即X向)排布为至少两排电芯排1，电芯排1沿第二方向(即Y向)延伸，且每排电芯排1包括多个个电芯11。相邻的两排电芯排1之间设置有一个液冷板2，液冷板2内设置有液冷通道211。两个支撑组件3分别设置在多个电芯11沿第二方向的两端，支撑组件3内设置有汇流腔33，支撑组件3上还设置有过液端口38，过液端口38的一端与汇流腔33连通，过液端口38的另一端与支撑组件3的外部连通。每个液冷板2沿第二方向的两端分别支撑在两个支撑组件3上，液冷通道211的第一端和第二端分别与两个支撑组件3上的汇流腔33相连通。故对于电池模组10而言，第一个支撑组件3的过液端口38、第一个支撑组件3的汇流腔33、液冷板2的液冷通道211、第二个支撑组件3的汇流腔33、第二个支撑组件3的过液端口38依次连通，从而形成了连续的过液通道，该过液通道内通入冷却液即可对电芯11进行降温。
也就是说，本实施例的电池模组10通过在相邻两排电芯排1之间设置液冷板2，使液冷板2能充分与每个电芯11接触换热，提高了散热效率；两个支撑组件3配合可以对多个液冷板2进行支撑，支撑组件3内的汇流腔33可以将多个液冷板2内的液冷通道211进行汇流，故将一个支撑组件3的过液端口38作为进液口，另一个支撑组件3的过液端口38作为出液口即可实现多个液冷板2内冷却液的供应，电池模组10的结构简单，便于进行装配，且能降低电池模组10的制造成本。
本实施例中，多个电芯11沿第一方向排布为四排电芯排1，每排电芯排1内包括四个电芯11，对应地，液冷板2有三个，每个液冷板2设置在相邻的两排电芯排1之间。其他实施例中，可以根据实际需要调整电芯排1的排数、每 排电芯排1包括的电芯11数量、电池模组10包含的电芯11总个数。
如图3和图4所示，电芯11为方形电芯，因此电芯11具有三组相对设置的侧面，定义三组侧面中面积最大的侧面为最大侧面111，本实施例中，方形电芯的最大侧面111与最大侧面111对应的液冷板2贴合设置。故可以使每个电芯11具有尽可能大的表面与液冷板2进行接触换热，从而提高电池模组10的散热效率。
可选地，如图5所示，电芯11与液冷板2之间通过导热胶层4连接，一方面，可以将多个电芯11和多个液冷板2固定为一个结构件，故在将该结构件与支撑组件3连接时操作更为方便。另一方面，选择导热胶层4的连接方式还能保证电芯11与液冷板2之间良好的换热效果。可以理解的是，导热胶层4在此不做具体限定。
本实施例中，如图4和图5所示，液冷板2包括主体部21和两个承托部22，其中，主体部21设置在相邻两排电芯排1之间。主体部21与电芯11的最大侧面111贴合设置。两个承托部22连接在主体部21的下端，两个承托部22分别沿第一方向向主体部21的第一侧和第二侧延伸，主体部21与两个承托部22构造为“丄”型结构，相邻两排电芯排1分别承托在液冷板2的两个承托部22上。导热胶层4对主体部21和电芯11表面的粘接、承托部22对电芯11下表面的承托，共同作用使得电芯11和液冷板2组成的结构件结构牢固，当通过机械手将该结构件从一个工位搬运至另一个工位时，该结构件沿长度方向的中间位置不易发生下沉(即结构件的中间不易起弧)，保证了结构件的形状精度，进而保证电芯11上的极柱的位置精度，确保后续极柱与其他部件的焊接精度。
可选地，液冷板2通过挤压的方式成型。挤压的工艺不仅可以直接形成液冷板2“丄”型的造型，且还可以直接成型液冷板2内的液冷通道211，成型方便、制造成本低。本实施例中，每个液冷板2中形成有多条液冷通道211，多条液冷通道211均设置在主体部21上。承托部22内不设置液冷通道211，故保证了承托部22的结构强度，进而保证了电芯11和液冷板2组成的结构件的结构强度。多条液冷通道211平行设置且沿第三方向(即Z向)排布，从而保证电芯11沿Z向的每个位置可以得到均匀的换热。液冷通道211的两端开口分别设置在主体部21沿第二方向两端的端面上。
可选地，如图4和图6所示，主体部21沿第二方向的两端分别凸出于承托部22，以形成两个插接端212，两个插接端212分别凸出于电芯排1沿第二方向的两端并分别插接于两端的支撑组件3，从而实现了液冷板2的两端分别支撑在两个支撑组件3上，且保证液冷通道211两端的开口分别伸入到两个支撑组件3的内部，实现了液冷通道211与支撑组件3内的汇流腔33连通。
可选地，如图3和图7所示，支撑组件3包括下支撑座31和上支撑座32，上支撑座32扣合于下支撑座31，以形成汇流腔33和多个安装插槽34，安装插槽34位于支撑组件3朝向液冷板2的一侧，每个安装插槽34均与汇流腔33相连通，每个液冷板2的每个端部插接于一个安装插槽34。即每个液冷板2的插接端212对应插接于一个安装插槽34中，故液冷通道211可以通过安装插槽34与汇流腔33相连通。通过将支撑组件3设置为可上下扣合的上支撑座32和下支撑座31，便于实现对汇流腔33和安装插槽34的加工，从而降低支撑组件3的制造难度。
相关技术中为向液冷板内供应冷却液，通常分别在每块液冷板的两端焊接进水管、出水管，这种结构中管件与液冷板的连接可靠性差，漏水风险大。而本申请中，液冷板2的两端分别插入到对应的安装插槽34中，即可实现液冷通道211与两端汇流腔33的连通，连接结构可靠，不易出现松动、漏液问题，且方便后续进行维护和检修。此外，相关技术中多个进水管和出水管的方案，还会导致液冷板和管件组成的整体在与端板装配时出现干涉、连接结构繁琐等问题，装配难度大。本申请中通过设置上述支撑组件3，在装配电池模组时，可以先借助两个下支撑座31对液冷板2沿第二方向的两端进行预固定，然后再将两个上支撑座32分别沿第三方向扣合在两个下支撑座31上，使整个装配过程中不会产生结构干涉的问题，且将上支撑座31和下支撑座32的位置锁紧后，即可实现多个液冷板2与支撑组件3的连通和固定，大大降低了装配的难度和装配工作量。
本实施例中，如图3所示，下支撑座31上设置有第一安装孔314，对应的，上支撑座32上设置有第二安装孔324，第一紧固件从上至下依次穿设第二安装孔324和第一安装孔314后实现上支撑座32与下支撑座31的连接。其中第一紧固件可以为螺栓，第二安装孔324为螺纹孔。通过螺栓实现对上支撑座32和下支撑座31连接的方式不仅安装方便，且便于后续进行拆装检修。
如图6和图7所示，下支撑座31朝向上支撑座32的一侧设置有第一半腔312和多个第一半槽311，上支撑座32朝向下支撑座31的一侧设置有第二半腔316(如图10所示)和多个第二半槽321，当将上支撑座32扣合在下支撑座31上后，第一半腔312和第二半腔316扣合并构成汇流腔33，每个第二半槽321对应与一个第一半槽311扣合并构成一个安装插槽34。第一半槽311的数量、第二半槽321的数量和液冷板2的数量一致。多个第一半槽311沿第一方向间隔设置，多个第二半槽321也沿第一方向间隔排布，从而保证液冷板2能一一对应地插入到安装插槽34中。可选地，第一半槽311沿第三方向延伸，且沿第三方向的每个位置均与第一半腔312连通，第二半槽321沿第三方向延伸，且沿第三方向的每个位置均与第二半腔316连通，故当液冷板2插入到安装插槽 34内后，沿第三方向排布的多个液冷通道211均可与汇流腔33连通。可选地，如图7所示，过液端口38设置在上支撑座32上，过液端口38与第二半腔316相连通，实现了过液端口38与汇流腔33的连通。其他实施例中，过液端口38也可以设置在下支撑座31上，且过液端口38与第一半腔312相连通。
可选地，如图6和图7所示，支撑组件3形成有止挡端面37，止挡端面37垂直于第二方向设置，电芯排1垂直于第二方向的端面与所述端面对应的支撑组件3的止挡端面37相抵。在将液冷板2的插接端212插入到安装插槽34时，止挡端面37与电芯11端面的配合可以对电芯排1起到定位作用，保证上述结构件与支撑组件3之间安装的位置精度。本实施例中，如图7所示，下支撑座31上设置有第一止挡面313，上支撑座32上设置有第二止挡面322，第一止挡面313和第二止挡面322共面设置，且共同形成止挡端面37。其他实施例中，止挡端面37也可以设置为仅包括第一止挡面313，或者仅包括第二止挡面322。
可选地，支撑组件3还包括密封组件，密封组件设置为对液冷板2与汇流腔33的连通处进行密封。本实施例通过将支撑组件3设置为包括下支撑座31和上支撑座32两部分，便于实现密封组件的设置，进而保证密封的可靠性。
如图6和图7所示，密封组件包括第一密封件35，第一密封件35包括第一密封部351和第二密封部352，第一密封部351夹设在上支撑座32和下支撑座31之间，且环设于汇流腔33，从而能够对上支撑座32和下支撑座31之间的缝隙进行密封，避免冷却液从此缝隙处出现泄漏，提高电池模组10的安全性。第二密封部352夹设在安装插槽34的侧壁与液冷板2的侧壁之间，从而对液冷板2和安装插槽34之间的安装缝隙进行密封，进而避免冷却液从此处漏液，进一步提高电池模组10的安全性。本实施例中，第一密封件35一体成型，其他实施例中，第一密封部351和第二密封部352也可以设置为分体成型的结构。
为便于第一密封件35的加工，本实施例中，第二密封部352仅设置在第一半槽311的侧壁与液冷板2的侧壁之间。对此，本实施例电池模组10还包括第二密封件36，第二密封件36夹设在第二半槽321的侧壁与液冷板2的侧壁之间。故第二密封部352和第二密封件36的配合共同实现了安装插槽34与液冷板2之间的缝隙的密封。可以理解的是，本领域技术人员可以根据实际密封要求选择设置第一密封件35和第二密封件36的横截面形状，在此不做具体限定。
可选地，如图8所示，电池模组10还包括两个相对设置的侧板5，侧板5垂直于第一方向设置，至少两排电芯排1夹设在两个侧板5之间，侧板5沿第二方向的两端分别支撑在两个支撑组件3上。也就是说两个侧板5至少沿第一方向将多个电芯11和液冷板2组成的结构件夹紧，并固定在支撑组件3上，从而使得电池模组10整体结构牢固可靠。
如图8所示，侧板5包括本体部51和两个安装部52，本体部51与至少两排电芯排1贴合设置，两个安装部52分别设置在本体部51的第一端和第二端，两个安装部52分别与两个支撑组件3连接，故两个本体部51可以将上述结构件沿第一方向夹紧，并使结构件、两个支撑组件3和两个侧板5构成一个牢固的整体。本实施例中，安装部52凸出设置在本体部51的侧表面，安装部52搭接在支撑组件3的上表面。安装部52上设置有第三安装孔521，支撑组件3在对应位置设置有第四安装孔325，第二紧固件依次穿设第三安装孔521和第四安装孔325后将侧板5和上支撑座32相固定。可选地，第二紧固件为螺栓，第四安装孔325为螺纹孔，第二紧固件螺纹连接于第四安装孔325。可选地，第四安装孔325可以设置为仅贯穿上支撑座32的孔，也可以设置为贯穿上支撑座32后继续延伸到下支撑座31中的孔。
可选地，如图8和图9所示，侧板5还包括承托板54，承托板54连接于本体部51的下端，且沿第一方向朝靠近至少两排电芯排1的一侧延伸，至少两排电芯排1承托在两个承托板54上。通过承托部22能够在第三方向对电芯排1和液冷板2组成的结构件进行承托，使电池模组10整体具有更佳的结构强度。当使用机械手将电池模组10从一个工位搬运至另一个工位时，可以避免电池模组10沿其长度方向的中间部位下沉起弧，进而保证电池模组10后续能够精准地与其他部件进行配合。
本实施例中，电池模组10通过紧固件固定在箱体20的内部，连接可靠、结构简单且操作方便。如图8所示，侧板5还包括连接凸部53，连接凸部53设置在本体部51背离至少两排电芯排1的一侧，连接凸部53设置为与电池箱的箱体20连接。本实施例中，连接凸部53沿第二方向延伸设置。
如图7所示，上支撑座32上设置有第五安装孔326，下支撑座31上设置有第六安装孔315，当将上支撑座32扣合在下支撑座31上后，第五安装孔326和第六安装孔315正相对设置。如图8所示，连接凸部53上设置有多个第七安装孔531。电池箱还包括第三紧固件和第四紧固件，其中第三紧固件依次穿设第五安装孔326、第六安装孔315后可以将支撑组件3锁定在箱体20上，第四紧固件穿设第七安装孔531后可以将侧板5锁定在箱体20底部。也就是说，通过第三紧固件和第四紧固件可以将整个电池模组10可靠地固定在箱体20内。
本实施例中，如图2和图9所示，箱体20内的底部设置有一圈凸台201，当将电池模组10放置在箱体20内后，连接凸部53、支撑组件3分别承托在凸台201上。凸台201上设置有多个螺纹孔202，多个螺纹孔202分别与多个第六安装孔315或多个第七安装孔531相对设置。第三紧固件和第四紧固件均可以为螺栓，第三紧固件在穿设第五安装孔326和第六安装孔315后与第三紧固件 对应的螺纹孔202连接，第四紧固件在穿设第七安装孔531后与第四紧固件对应的螺纹孔202螺纹连接。
可选地，如图9所示，电池模组10的底部与箱体20的底部之间填充有胶水层30，通过设置胶水层30，既可以保证电池模组10与箱体20之间连接牢固，避免电池模组10相对于箱体20发生位置窜动，又能对电池模组10的底部实现全面的支撑，避免电池模组10在使用过程中沿其长度方向的中部发生下沉起弧。

Claims (14)

  1. 电池模组，包括：
    多个电芯(11)，沿第一方向排布为至少两排电芯排(1)，所述电芯排(1)沿第二方向延伸；
    至少一个液冷板(2)，相邻的两排电芯排(1)之间设置有一个液冷板(2)，所述液冷板(2)内设置有液冷通道(211)；
    两个支撑组件(3)，所述支撑组件(3)内设置有汇流腔(33)，所述汇流腔(33)设置为通过过液端口(38)与外部连通，每个液冷板(2)沿所述第二方向的两端分别支撑在所述两个支撑组件(3)上，且所述液冷通道(211)的的第一端和第二端分别与两个汇流腔(33)相连通。
  2. 如权利要求1所述的电池模组，其中，所述支撑组件(3)包括下支撑座(31)和上支撑座(32)，所述上支撑座(32)扣合于所述下支撑座(31)，以形成所述汇流腔(33)和多个安装插槽(34)，所述安装插槽(34)位于所述支撑组件(3)朝向所述液冷板(2)的一侧，且与所述汇流腔(33)相连通，每个液冷板(2)的每个端部插接于一个安装插槽(34)。
  3. 如权利要求2所述的电池模组，其中，所述支撑组件(3)还包括：第一密封件(35)和第二密封件(36)中的至少一种；
    所述第一密封件(35)，包括第一密封部(351)和第二密封部(352)，所述第一密封部(351)夹设在所述上支撑座(32)和所述下支撑座(31)之间，且环设于所述汇流腔(33)，所述第二密封部(352)夹设在所述安装插槽(34)的侧壁与所述液冷板(2)的侧壁之间；
    所述第二密封件(36)，夹设在所述安装插槽(34)的侧壁与所述液冷板(2)的侧壁之间。
  4. 如权利要求2所述的电池模组，其中，所述下支撑座(31)朝向所述上支撑座(32)的一侧设置有第一半腔(312)和多个第一半槽(311)，所述上支撑座(32)朝向所述下支撑座(31)的一侧设置有第二半腔(316)和多个第二半槽(321)，所述第一半腔(312)和所述第二半腔(316)构成所述汇流腔(33)，每个第二半槽(321)对应与一个第一半槽(311)构成一个安装插槽(34)。
  5. 如权利要求1所述的电池模组，其中，所述支撑组件(3)形成有止挡端面(37)，所述止挡端面(37)垂直于所述第二方向设置，所述电芯排(1)垂直于所述第二方向的端面与所述端面对应的所述支撑组件(3)的所述止挡端面(37)相抵。
  6. 如权利要求1所述的电池模组，其中，所述液冷板(2)包括：
    主体部(21)，设置在相邻两排电芯排(1)之间；
    两个承托部(22)，连接于所述主体部(21)的下端并分别向所述主体部(21)的第一侧和第二侧延伸，以与所述主体部(21)构造为“丄”型结构，相邻两排电芯排(1)分别承托在所述两个承托部(22)上。
  7. 如权利要求6所述的电池模组，其中，所述主体部(21)沿所述第二方向的两端分别凸出于所述承托部(22)，以形成两个插接端(212)，所述两个插接端(212)分别凸出于所述电芯排(1)沿所述第二方向的两端并分别插接于所述两个支撑组件(3)。
  8. 如权利要求6所述的电池模组，其中，所述主体部(21)与所述主体部(21)的第一侧和第二侧中每侧的电芯(11)之间设置有导热胶层(4)，并通过所述导热胶层(4)粘接连接。
  9. 如权利要求1-7任一项所述的电池模组，还包括两个相对设置的侧板(5)，所述侧板(5)垂直于所述第一方向设置，所述至少两排电芯排(1)夹设在所述两个侧板(5)之间，所述侧板(5)沿所述第二方向的两端分别支撑在所述两个支撑组件(3)上。
  10. 如权利要求9所述的电池模组，其中，所述侧板(5)包括：
    本体部(51)，与所述至少两排电芯排(1)贴合设置；
    承托板(54)，连接于所述本体部(51)的下端，且沿所述第一方向朝靠近所述至少两排电芯排(1)的一侧延伸，所述至少两排电芯排(1)承托在两个承托板(54)上。
  11. 如权利要求10所述的电池模组，其中，所述侧板(5)还包括：安装部(52)和连接凸部(53)中的至少一种；
    安装部(52)，所述安装部(52)的数量为两个，所述两个安装部(52)分别设置在所述本体部(51)的第一端和第二端，所述两个安装部(52)分别与所述两个支撑组件(3)连接；
    连接凸部(53)，所述连接凸部(53)设置在所述本体部(51)背离所述至少两排电芯排(1)的一侧，所述连接凸部(53)被配置为与电池箱的箱体(20)连接。
  12. 如权利要求1-7任一项所述的电池模组，其中，所述电芯(11)为方形电芯，所述电芯(11)具有一组相对设置且面积最大的最大侧面(111)，所述最大侧面(111)与所述最大侧面(111)对应的所述液冷板(2)贴合设置。
  13. 一种电池箱，包括箱体(20)和权利要求1-12任一项所述的电池模组，所述电池模组设置在所述箱体(20)中。
  14. 如权利要求13所述的电池箱，其中，所述电池模组的底部与所述箱体 (20)的底部之间填充有胶水层(30)。
PCT/CN2023/099056 2023-05-24 2023-06-08 电池模组及电池箱 Ceased WO2024045754A1 (zh)

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