WO2021135463A1 - 电池模块、电池组及装置 - Google Patents

电池模块、电池组及装置 Download PDF

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Publication number
WO2021135463A1
WO2021135463A1 PCT/CN2020/118763 CN2020118763W WO2021135463A1 WO 2021135463 A1 WO2021135463 A1 WO 2021135463A1 CN 2020118763 W CN2020118763 W CN 2020118763W WO 2021135463 A1 WO2021135463 A1 WO 2021135463A1
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WO
WIPO (PCT)
Prior art keywords
battery module
battery
electrode terminal
insulating plate
connecting piece
Prior art date
Application number
PCT/CN2020/118763
Other languages
English (en)
French (fr)
Inventor
黄海华
李盛林
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP20910446.2A priority Critical patent/EP3920257B1/en
Priority to JP2022538996A priority patent/JP7280442B2/ja
Priority to KR1020227020005A priority patent/KR102523486B1/ko
Publication of WO2021135463A1 publication Critical patent/WO2021135463A1/zh
Priority to US17/535,189 priority patent/US11652262B2/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—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
    • H01M50/249—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
    • H01M50/271—Lids or covers for the racks or secondary 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/591—Covers
    • 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

Definitions

  • the embodiments of the present application relate to the technical field of energy storage devices, in particular to battery modules, battery packs, and devices.
  • the battery module includes a plurality of battery cells, the battery cells include electrode terminals, and the electrode terminals are connected by connecting pieces to connect the plurality of battery cells. Normally, the connecting pieces and the electrode terminals are connected by welding , The metal particles generated during the welding process will scatter between the battery cells, which is not only very difficult to clean, but also easily causes the adjacent battery cells to short-circuit through the metal particles, which may cause danger.
  • the present application provides a battery module, a battery pack, and a device.
  • the battery module can reduce the possibility of metal particles and other impurities entering between the battery cells, reduce the difficulty of cleaning the battery module, and improve the safety and reliability of the battery module. Sex.
  • An embodiment of the present application provides a battery module, including:
  • Battery cells including electrode terminals
  • the insulating plate is arranged on the top of the battery cell, and the insulating plate includes a body portion and a first protrusion portion protruding relative to the body portion;
  • the first protrusion includes a side wall connected to the main body and a top wall connected to the top of the side wall.
  • the side wall and the top wall are configured to enclose to form a receiving cavity, and at least part of the electrode terminal is accommodated in the receiving cavity, And the top wall covers part of the electrode terminals.
  • the insulating plate can not only shield each battery cell, but also can cover a part of the electrode terminal through the first protrusion, so as to reduce the entry of metal particles into each battery cell. The risk between the bodies, thereby reducing the difficulty of cleaning the battery module, and improving the safety and reliability of the battery module.
  • the top wall is provided with a through hole, the through hole penetrates into the receiving cavity, and a part of the electrode terminal is exposed through the through hole.
  • the electrode terminal includes a base and a first connecting portion protruding from the base, the top wall covers at least a part of the base, and the first connecting portion is exposed from the through hole.
  • the top surface of the first connecting portion is not lower than the top surface of the top wall.
  • the battery module further includes a connecting piece, and the connecting piece is located on the side of the insulating plate away from the battery cell;
  • the connecting piece is used to connect the part of the electrode terminal exposed in the through hole.
  • the connecting piece covers the through hole.
  • the body portion is provided with a receiving groove
  • the first protrusion is provided on the bottom wall of the receiving groove
  • the body portion is provided with a plurality of second protrusions connected to the bottom wall, the second protrusions are located on the outer periphery of the first protrusions, and the second protrusions and the first protrusions The convex direction is the same.
  • the insulating board includes flanges, and the flanges are arranged on the outer periphery of the main body;
  • the extending direction of the flanging is the same as the convex direction of the first convex portion.
  • a second aspect of the present application provides a battery pack.
  • the battery pack includes a box and the above battery modules, and the battery modules are housed in the box.
  • the third aspect of the present application provides a device, including:
  • the above battery pack the battery pack is used to provide electrical energy.
  • the insulating plate is provided with a first raised portion.
  • the first raised portion can include a side wall and a top wall, and the two enclose a receiving cavity.
  • the insulating plate can not only The battery cells can be shielded, and part of the electrode terminals can also be covered by the first protrusion to reduce the risk of metal particles entering between the battery cells, thereby reducing the difficulty of cleaning the battery module and improving the battery The safety and reliability of the module.
  • FIG. 1 is a schematic structural diagram of a device provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of a battery pack provided by an embodiment of the application.
  • FIG. 3 is a schematic structural diagram of an arrangement structure of insulating plates and battery cells provided by an embodiment of the application.
  • Fig. 4 is a partial enlarged view of position I in Fig. 3.
  • FIG. 5 is a schematic structural diagram of the insulating board installed in the battery cell arrangement structure provided by an embodiment of the application.
  • Fig. 6 is a partial enlarged view of position II in Fig. 5.
  • FIG. 7 is a schematic structural diagram of a battery cell arrangement structure provided by an embodiment of the application.
  • Fig. 8 is a partial enlarged view of position III in Fig. 7.
  • FIG. 9 is a schematic structural diagram of a battery module provided by an embodiment of the application.
  • Fig. 10 is a partial enlarged view of position IV in Fig. 9.
  • Fig. 11 is a schematic structural diagram of a connector provided by an embodiment of the application.
  • FIG. 12 is a top view of an insulating board provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of the structure of an insulating board provided by an embodiment of the application.
  • Fig. 14 is a partial enlarged view of position V in Fig. 13.
  • Fig. 15 is a partial enlarged view of position VI in Fig. 13.
  • Fig. 16 is a partial enlarged view of position VII in Fig. 13;
  • A- battery module
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; unless otherwise specified or Note that the term “multiple” refers to two or more including two; the terms “connected”, “fixed”, etc. should be understood in a broad sense, for example, “connected” can be a fixed connection, a detachable connection, or a whole Ground connection, or electrical connection; it can be directly connected or indirectly connected through an intermediate medium.
  • connection can be a fixed connection, a detachable connection, or a whole Ground connection, or electrical connection; it can be directly connected or indirectly connected through an intermediate medium.
  • the embodiments of the present application provide a device, a battery pack, and a battery module that use a battery cell as a power source.
  • the devices that use a battery cell as a power source include devices such as vehicles, ships, small aircraft, and energy storage cabinets.
  • the device may include a power source for providing driving force for the device, and the power source may be configured as a battery module or battery pack that provides electrical energy to the device.
  • the driving force of the device can be all electric energy, and it can also include electric energy and other energy sources (such as mechanical energy).
  • the power source can be a battery module (or battery pack), and the power source can also be a battery module (or battery pack). And engine etc. Therefore, any device capable of using a battery cell as a power source falls within the protection scope of the present application.
  • the vehicle in the embodiment of the present application may be a new energy vehicle.
  • the new energy vehicle may be a pure electric vehicle, or a hybrid vehicle or a range-extended vehicle.
  • the vehicle may include a battery pack M and a vehicle body.
  • the battery pack M is disposed on the vehicle body.
  • the vehicle body is also provided with a drive motor.
  • the drive motor is electrically connected to the battery pack M.
  • the battery pack M provides electrical energy to drive the motor.
  • the transmission mechanism is connected with the wheels on the vehicle body to drive the vehicle to travel.
  • the battery pack M may be horizontally arranged at the bottom of the vehicle body.
  • the battery pack M includes a box M1 and a battery module A.
  • the box M1 has a cavity M2.
  • the battery module A is housed in the cavity M2.
  • the number of battery modules A can be one or more.
  • a plurality of battery modules A are arranged in the accommodating cavity.
  • the type of the box M1 is not limited, and can be a frame-shaped box, a disk-shaped box, or a box-shaped box.
  • the box body M1 may include a lower box body that accommodates the battery module A and an upper box body that is closed with the lower box body.
  • the battery module A includes a plurality of battery cells 1, wherein the plurality of battery cells 1 are stacked on each other along the length direction X to form a battery cell arrangement structure A1.
  • the battery cell 1 includes an electrode terminal 11, which is used to output electric energy, and each battery cell 1 includes a positive electrode terminal and a negative electrode terminal.
  • a plurality of battery cells 1 are electrically connected, Specifically, connection methods such as series and/or parallel can be used, and the battery cells 1 are connected through the connecting piece 3. For example, when multiple battery cells 1 are connected in series, the positive electrode terminal of one battery cell 1 is connected to the other The negative electrode terminal of the battery cell 1 is connected by a connecting piece 3.
  • the connecting piece 3 is welded to the positive electrode terminal and the negative electrode terminal, and metal particles are generated during the welding process. These metal particles are scattered throughout the battery module A, for example, between the battery cells 1 and Between the electrode terminal 11 and the connecting piece 3, adjacent battery cells 1 are short-circuited by metal particles, and the electrode terminal 11 and the connecting piece 3 are short-circuited by metal particles, thereby affecting the charging and discharging process of the battery module A. Therefore, after the connection piece 3 and the electrode terminal 11 are welded, the battery module A needs to be cleaned in order to remove the metal particles in the battery module A, thereby improving the safety and reliability of the battery module A.
  • the battery module A can be cleaned by turning over, adsorbing, and cleaning, so as to remove the metal particles in the battery module A.
  • each battery cell 1 is first fixed (specifically, it can be fixed by bonding) in the box M1 of the battery pack M, and then the connecting piece 3 and the electrode terminal 11 are welded, only the entire battery pack M can be cleaned. , It is difficult to achieve the adsorption and cleaning of the battery pack M, resulting in the risk of residual metal particles in the battery pack M.
  • the conventional battery module A may also include an insulating plate, the insulating plate covering the electrode terminal 11 of each battery cell 1, the connecting piece 3 is located above the insulating plate, and the insulating plate is provided for the electrode.
  • the through hole through which the terminal 11 passes has a large gap between the through hole and the electrode terminal 11, so that the electrode terminal 11 passing through the through hole is welded to the connecting piece 3.
  • the through hole of the insulating plate is also a place where metal particles are easily scattered, and it is difficult to clean up.
  • the battery module A may include a battery cell 1 and an insulating plate 2, and each battery cell 1 is along the length direction. X are stacked on each other to form a battery cell arrangement structure A1.
  • the battery cell 1 has an electrode terminal 11, and the insulating plate 2 is arranged on the top of the battery cell 1. Protruding first protrusion 22.
  • the first protrusion 22 may include a side wall 221 and a top wall 222.
  • the top wall 222 is connected to the main body 21 through the side wall 221, and the two enclose a receiving cavity.
  • the top wall 222 of the first protrusion 22 covers a part of the electrode terminal 11.
  • each battery cell 1 can be shielded, and the risk of metal particles and other impurities entering between the battery cells 1 can be reduced. , And reduce the difficulty of cleaning the battery module A, and the insulating plate 2 can insulate each battery cell 1 and other metal parts, thereby improving the reliability of the battery cell 1.
  • the insulating plate 2 covers the part of the electrode terminal 11 through the first protrusion 22 to reduce the risk of metal particles and other impurities entering between adjacent battery cells 1 through the insulating plate 2, and when metal When the particles fall on the first protrusion 22, they can slide down on the insulating plate 2 through the sidewall 221 of the first protrusion 22, thereby further reducing the risk of metal particles entering the battery module A, causing metal particles and other impurities to enter the battery module A. It can only be attached to the surface of the insulating plate 2. When cleaning the battery module A after the welding is completed, only the surface of the insulating plate 2 on the side away from the battery cell 1 needs to be cleaned. Cleaning the battery module A, and improve the safety and reliability of the battery module A.
  • the top wall 222 of the first protrusion 22 may be provided with a through hole 222a.
  • the through hole 222a penetrates the top wall 222 and communicates with the receiving cavity. It can extend along the through hole 222a, that is, a part of the electrode terminal 11 is exposed to the through hole 222a. This part of the electrode terminal 11 can be used to connect with the connecting piece 3. The two can be connected by welding, so as to realize the battery cell 1. Electrical connection.
  • 222a locates the part of the electrode terminal 11 extending out of the through hole 222a, thereby improving the positioning accuracy of the connecting piece 3, and further improving the stability of the connection between the connecting piece 3 and the electrode terminal 11.
  • the side wall of the portion of the electrode terminal 11 protruding from the through hole 222a can abut against the side wall of the through hole 222a, that is, there is no gap or a small gap between the electrode terminal 11 and the side wall of the through hole 222a, so that it can Further reduce the risk of metal particles or other impurities falling into the battery module A.
  • the electrode terminal 11 may include a base 111 and a first connecting portion 112.
  • the first connecting portion 112 protrudes relative to the base 111.
  • the first connecting portion 112 can extend along the through hole 222a, and the top wall 222 of the first protrusion 22 covers at least part of the base 111.
  • the insulating plate 2 when the insulating plate 2 is connected to the battery cell arrangement structure A1, by extending the first connecting portion 112 of the electrode terminal 11 from the corresponding through hole 222a, it can pass through the sides of the base 111 and the through hole 222a.
  • the wall positions the insulating plate 2 and the battery cell arrangement structure A1, thereby improving the position accuracy of the insulating plate 2 and the battery cell arrangement structure A1, and improving the connection reliability between the two.
  • the top wall 222 of the first protrusion 22 of the insulating plate 2 covers at least part of the base 111 of the corresponding electrode terminal 11, the gap between the electrode terminal 11 and the through hole 222a of the insulating plate 2 can be further reduced. There is a risk of gaps between them, thereby reducing the risk of metal particles or other impurities entering the containment cavity, thereby reducing the risk of metal particles or other impurities entering the battery module A.
  • the top surface of the first connecting portion 112 is not lower than the top surface of the top wall 222, that is, the first connecting portion 112 is opposite to The top wall 222 is flush or protrudes.
  • Such a design can facilitate the connection of the electrode terminal 11 to the connecting piece 3 through the first connecting portion 112, and at the same time facilitate the positioning of the connecting piece 3 and the electrode terminal 11 when connecting with the connecting piece 3.
  • the connecting piece 3 is located on the side of the insulating plate 2 away from the battery cell 1, and is connected to the part of the electrode terminal 11 where the through hole 222a is exposed, thereby facilitating the welding of the connecting piece 3 and the electrode terminal 11. Moreover, since the welding position of the connecting piece 3 and the electrode terminal 11 is located on the side of the insulating plate 2 away from the battery cell 1, the risk of the metal particles generated during welding falling between the battery cells 1 can be further reduced, and the battery module can be improved. A's safety and reliability.
  • the connecting piece 3 can cover the through hole 222a.
  • the connecting piece 3 remains It can be welded to the first connecting portion 112, reducing the risk that the connecting piece 3 cannot be welded to the corresponding electrode terminal 11 due to the position of the electrode terminal 11 deviating from the preset position, thereby improving the connection stability between the connecting piece 3 and the electrode terminal 11
  • the connecting piece 3 covers the through hole 222a, the contact area between the connecting piece 3 and the electrode terminal 11 is relatively large, thereby further improving the stability of the connection between the two and increasing the connection between the electrode terminal 11 and the electrode terminal 11
  • the overcurrent area between the sheets 3 reduces the risk of overheating of the connecting sheet 3 and the electrode terminal 11.
  • the connecting piece 3 may include a recessed portion 31 and at least two second connecting portions 32, each of the second connecting portions 32 is located on opposite sides of the recessed portion 31, the second connecting portion 32 and The recessed portion 31 can be integrally formed.
  • the recessed portion 31 is recessed toward the direction of the insulating plate 2.
  • Each second connecting portion 32 is used to connect with the first connecting portion 112 of the electrode terminal 11.
  • the recessed portion 31 can be located on the connecting piece 3.
  • the connecting piece 3 is larger than the area of the through hole 222 a of the top wall 222, and the connecting member 3 may cover each through hole 222 a through the second connecting portion 32.
  • the body portion 21 of the insulating plate 2 may be provided with a receiving groove 211.
  • a recessed area may be provided on the body portion 21, and the recessed area faces the electrode terminal 11
  • the recessed area forms a receiving groove 211
  • the first protrusion 22 is located on the bottom wall 211 a of the receiving groove 211.
  • the metal particles produced by welding can slide down from the side wall 221 of the first protrusion 22 into the receiving groove 211. Therefore, the receiving groove 211 is used to collect the metal generated when the connecting piece 3 and the electrode terminal 11 are welded. Particles, and when cleaning the battery module A after the welding is completed, only the receiving groove 211 needs to be cleaned.
  • the main body 21 has a plurality of second protrusions 24, and each second protrusion 24 is disposed on the bottom wall 211a of the receiving groove 211, and Located on the outer periphery of the first protrusion 22, the protrusion direction of the second protrusion 24 is the same as the protrusion direction of the first protrusion 22, that is, it protrudes away from the battery cell 1.
  • the metal particles generated during the welding of the connecting piece 3 and the electrode terminal 11 will move away from the welding position. When the metal particles touch the second protrusion 24 during the movement, they can act on the second protrusion 24.
  • the bottom is rebounded or slid down to the receiving groove 211, so that the receiving groove 211 can collect the metal particles generated during welding, thereby facilitating the collection and cleaning of the metal particles.
  • the receiving groove 211 is divided into different collection areas by the second protrusion 24, and each collection area may be respectively provided with a first protrusion 22, and the number of the first protrusion 22 may be one or more,
  • the electrode terminals 11 connected by the same connecting piece 3 can be located in the same collection area, so that the metal particles generated during welding fall into the collection area near the welding position, which is easier to clean.
  • the second protrusion 24 is not only used to collect metal particles generated by welding, but also can be used to position the connecting piece 3.
  • the connecting piece 3 When the connecting piece 3 is welded, the connecting piece 3 can be positioned relative to each other. Between adjacent second protrusions 24, and the connecting piece 3 can also abut against the second protrusions 24 on both sides thereof, so that the connecting piece 3 can be positioned through the second protrusions 24 to improve the connection
  • the positioning accuracy of the sheet 3 enables the connecting sheet 3 to cover the through hole 222 a of the insulating plate 2, and the reliability of the connection between the connecting sheet 3 and the electrode terminal 11 is improved.
  • the insulating board 2 may have a third protrusion 25, which is provided on the body part 21, and the protrusion direction of the third protrusion 25 may be the same as that of the first protrusion 22. And the second protrusion 24 is the same, that is, it protrudes in the direction away from the battery cell 1.
  • the third protrusion 25 may be provided with a reinforcing structure, which may be a common reinforcing structure such as a protrusion or a rib, thereby improving The structural strength and service life of the insulating board 2.
  • the third raised portion 25 and the second raised portion 24 may enclose a collection area to collect metal particles generated during welding.
  • the third raised portion 25 may also include a avoidance area, where the avoidance area is set It can be selected according to the actual situation. In a possible design, the avoidance area is used to avoid the terminals of the flexible printed circuit (FPC), thereby optimizing the structure of the insulating plate 2 to reduce interference between the insulating plate 2 and other components during use. risk.
  • FPC flexible printed circuit
  • the insulating plate 2 may include a flange 23, which is provided on the outer periphery of the body portion 21 and extends in the same direction as the convex direction of the first convex portion 22. That is, it extends in a direction away from the battery cell 1.
  • the flanging 23 can be used to enclose the receiving groove 211, and when the metal particles generated by welding touch the flanging 23, the metal particles can be rebounded and combined under the action of the flanging 23. It falls into the containing groove 211, thereby facilitating the collection and cleaning of metal particles.
  • the present application also provides a method for assembling the battery module A.
  • the battery module A includes a battery cell 1, an insulating plate 2 and a connecting piece 3, wherein the insulating plate 2 is provided with a first A raised portion 22, the first raised portion 22 has a side wall 221 and a top wall 222 connected, and the top wall 222 and the side wall 221 enclose a receiving cavity, the top wall 222 is provided with a through hole 222a, the through hole 222a and The containing cavity is connected.
  • the assembly method is described below.
  • a plurality of battery cells 1 are stacked on each other to form a battery cell arrangement structure A1.
  • the insulating plate 2 is placed on the top of the battery cell arrangement structure A1, so that a part of the electrode terminal 11 of the battery cell 1 is exposed through the through hole 222a, and the top wall 222 of the first protrusion 22 At least part of the electrode terminal 11 is covered.
  • the connecting piece 3 is connected to the portion of the electrode terminal 11 where the through hole 222a is exposed.
  • the insulating plate 2 when the insulating plate 2 is connected to the battery cell arrangement structure A1, firstly, a part of the electrode terminal 11 is exposed to the through hole 222a of the insulating plate 2, and the first protrusion 22 of the insulating plate 2 is made to cover the electrode terminal 11, so as to reduce the possibility of a gap between the insulating plate 2 and the electrode terminal 11, and then weld the connecting piece 3 and the electrode terminal 11 to expose the part of the through hole 222a, so as to reduce the metal particles generated by welding through the insulating plate.
  • the gap between 2 and the electrode terminal 11 enters between the battery cells 1, thereby improving the safety and reliability of the battery module A.
  • the metal particles produced by welding can only stay on the surface of the battery module A, thereby facilitating cleaning.
  • step S3 may further include the steps described below.
  • This design facilitates the positioning of the connecting piece 3 when the connecting piece 3 is connected to the electrode terminal 11, so as to improve the accuracy of the relative position between the connecting piece 3 and the electrode terminal 11, thereby improving the connection between the connecting piece 3 and the electrode terminal 11.
  • the stability facilitates the positioning of the connecting piece 3 when the connecting piece 3 is connected to the electrode terminal 11, so as to improve the accuracy of the relative position between the connecting piece 3 and the electrode terminal 11, thereby improving the connection between the connecting piece 3 and the electrode terminal 11.
  • step S1 may also include the steps described below.
  • S11 Apply glue on the top of at least part of the battery cells 1, and/or apply glue on the bottom of the insulating plate 2, so that the insulating plate 2 and the battery cell arrangement structure A1 can be adhered.
  • Glue is applied between the battery cell 1 and the insulating plate 2 so that the battery cell arrangement structure A1 can be fixedly connected to the insulating plate 2 to improve the stability of the connection between the two, thereby reducing the battery cell arrangement structure A1

Abstract

涉及储能器件技术领域，尤其涉及一种装置（D）、电池组（M）及电池模块（A），该电池模块（A），包括电池单体（1）和绝缘板（2），其中，绝缘板（2）包括本体部（21）和第一凸起部（22），第一凸起部（22）具有侧壁（221）和顶壁（222），且二者围成收容腔，通过将电极端子（11）的至少部分容置于收容腔，以及顶壁（222）覆盖部分电极端子（11），以降低焊接时产生的金属微粒或是其他杂质进入各电池单体（1）之间风险，进而降低电池模块（A）的清洁难度，并提高电池模块（A）的安全性和可靠性。

Description

电池模块、电池组及装置
本申请要求于2019年12月31日提交中国专利局、申请号为201922494988.2、发明名称为“电池模块、电池组及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施方式涉及储能器件技术领域，尤其涉及电池模块、电池组及装置。
背景技术
电池模块包括多个电池单体，电池单体包括电极端子，各电极端子之间通过连接片连接，从而将多个电池单体连接，通常情况下，连接片与电极端子通过焊接的方式进行连接，焊接过程中产生的金属微粒会散落至各电池单体之间，不仅清洁起来十分困难，而且容易导致相邻电池单体通过金属微粒短路，进而发生危险。
发明内容
本申请提供了一种电池模块、电池组及装置，该电池模块能够降低金属微粒以及其他杂质进入各电池单体之间的可能，降低电池模块的清洁难度，同时提高电池模块的安全性和可靠性。
本申请实施例提供一种电池模块，包括：
电池单体，包括电极端子；
绝缘板，设置于电池单体的顶部，绝缘板包括本体部和相对于本体部凸起的第一凸起部；
其中，第一凸起部包括连接于本体部的侧壁以及连接于侧壁顶部的顶壁，侧壁和顶壁被配置为围合形成收容腔，电极端子的至少部分容置于收容腔，且顶壁覆盖部分的电极端子。
因此，与常规的电池模块的绝缘板相比，绝缘板不仅可以对各电池单体进行遮蔽，还可以通过第一凸起部可以对电极端子的一部分进行覆盖，以降低金属微粒进入各电池单体之间的风险，进而降低电池模块的清洁难度，并提高电池模块的安全性和可靠性。
在一种可能的设计中，顶壁设有通孔，通孔贯穿至收容腔，电极端子的一部分露出于通孔。
在一种可能的设计中，电极端子包括基部和凸出于基部的第一连接部，顶壁覆盖至少部分的基部，第一连接部露出于通孔。
在一种可能的设计中，沿绝缘板的厚度方向，第一连接部的顶表面不低于顶壁的顶表面。
在一种可能的设计中，电池模块还包括连接片，连接片位于绝缘板的远离电池单体的一侧；
连接片用于连接电极端子露出于通孔的部分。
在一种可能的设计中，连接片覆盖通孔。
在一种可能的设计中，本体部设置有容纳槽，第一凸起部设置于容纳槽的底壁。
在一种可能的设计中，本体部设置有多个连接于底壁的第二凸起部，第二凸起部位于第一凸起部外周，且第二凸起部与第一凸起部的凸起方向相同。
在一种可能的设计中，绝缘板包括翻边，翻边设置于本体部的外周；
翻边的延伸方向与第一凸起部的凸起方向相同。
本申请的第二方面提供了一种电池组，电池组包括箱体和以上的电池模块，电池模块收容于箱体内。
本申请的第三方面提供了一种装置，包括：
以上的电池组，电池组用于提供电能。
本申请中，绝缘板设置有第一凸起部，第一凸起部可以包括侧壁和顶壁，且二者围成收容腔，与常规的电池模块的绝缘板相比，绝缘板不仅可以对各电池单体进行遮蔽，还可以通过第一凸起部可以对电极端子的一部分进行覆盖，以降低金属微粒进入各电池单体之间的风险，进而降低电池模块的清洁难度，并提高电池模块的安全性和可靠性。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本申请实施例所提供的装置的结构示意图。
图2为本申请实施例所提供的电池组的结构示意图。
图3为本申请实施例所提供的绝缘板和电池单体排列结构的结构示意图。
图4为图3中Ⅰ位置的局部放大图。
图5为本申请实施例所提供的绝缘板安装于电池单体排列结构的结构示意图。
图6为图5中Ⅱ位置的局部放大图。
图7为本申请实施例所提供的电池单体排列结构的结构示意图。
图8为图7中Ⅲ位置的局部放大图。
图9为本申请实施例所提供的电池模块的结构示意图。
图10为图9中Ⅳ位置的局部放大图。
图11为本申请实施例所提供的连接件的结构示意图。
图12为本申请实施例所提供的绝缘板的俯视图。
图13为本申请实施例所提供的绝缘板的结构示意图。
图14为图13中Ⅴ位置的局部放大图。
图15为图13中Ⅵ位置的局部放大图。
图16为图13中Ⅶ位置的局部放大图。
附图标记：
A-电池模块；
A1-电池单体排列结构；
M-电池组；
M1-箱体；
M2-腔体；
D-装置；
1-电池单体；
11-电极端子；
111-基部；
112-第一连接部；
2-绝缘板；
21-本体部；
211-容纳槽；
211a-底壁；
22-第一凸起部；
221-侧壁；
222-顶壁；
222a-通孔；
23-翻边；
24-第二凸起部；
25-第三凸起部；
3-连接片；
31-凹陷部；
32-第二连接部。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部 的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的描述中，除非另有明确的规定和限定，术语“第一”、“第二”、仅用于描述的目的，而不能理解为指示或暗示相对重要性；除非另有规定或说明，术语“多个”是指两个以上包括两个；术语“连接”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接，或电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
本申请实施例提供一种使用电池单体作为电源的装置、电池组、电池模块，其中，使用电池单体作为电源的装置包括车辆、船舶、小型飞机、储 能电柜等装置，在一种可能的设计中，该装置可以包括动力源，该动力源用于为装置提供驱动力，且该动力源可被配置为向装置提供电能的电池模块或电池组。其中，该装置的驱动力可全部为电能，也可包括电能和其他能源(例如机械能)，该动力源可为电池模块(或电池组)，该动力源也可为电池模块(或电池组)和发动机等。因此，只要能够使用电池单体作为电源的装置均在本申请的保护范围内。
如图1所示，以车辆为例，本申请实施例中的车辆可为新能源汽车，该新能源汽车可为纯电动汽车，也可为混合动力汽车或增程式汽车等。其中，该车辆可包括电池组M和车辆主体，该电池组M设置于车辆主体，该车辆主体还设置有驱动电机，且驱动电机与电池组M电连接，由电池组M提供电能，驱动电机通过传动机构与车辆主体上的车轮连接，从而驱动车辆行进。具体地，该电池组M可水平设置车辆主体的底部。
如图2所示，电池组M包括箱体M1和电池模块A，其中，箱体M1具有腔体M2，电池模块A收容于腔体M2内，电池模块A的数量可为一个或多个，多个电池模块A排列布置于容纳腔内。箱体M1的类型不受限制，可为框状箱体、盘状箱体或盒状箱体等。具体地，如图2所示，该箱体M1可包括容纳电池模块A的下箱体和与下箱体盖合的上箱体。
更具体地，该电池模块A包括多个电池单体1，其中，多个电池单体1沿长度方向X相互堆叠，形成电池单体排列结构A1。
电池单体1包括电极端子11，电极端子11用于输出电能，且各电池单体1均包括正极电极端子和负极电极端子，在电池模块A中，多个电池单体1之间电连接，具体可采用串联和/或并联等连接方式，且电池单体1之间通过连接片3连接，例如，当多个电池单体1串联时，一电池单体1的正极电极端子和与另一电池单体1的负极电极端子通过连接片3连接。
通常情况下，连接片3与正极电极端子和负极电极端子焊接，且在焊 接过程中会产生金属微粒，这些金属微粒会散落在电池模块A的各处，例如，各电池单体1之间以及电极端子11与连接片3之间，导致相邻电池单体1通过金属微粒短路、电极端子11与连接片3之间通过金属微粒短路,从而影响电池模块A的充放电过程。因此,在焊接连接片3与电极端子11之后，需要对电池模块A进行清洁，以便清除电池模块A内的金属微粒,从而提高电池模块A的安全性和可靠性。
通常情况下,当连接片3与电极端子11焊接完成后,可以通过将电池模块A翻转、吸附、清洗等工序进行清洁,从而清除电池模块A内的金属微粒。但是,当各电池单体1先固定(具体可以通过粘接的方式固定)于电池组M的箱体M1内,然后将连接片3和电极端子11焊接时,只能对电池组M整体清洁,难以实现电池组M的吸附清洁,导致电池组M存在残留金属微粒的风险。
在一些实施例中,常规的电池模块A还可以包括绝缘板,该绝缘板覆盖于各电池单体1的电极端子11上方,连接片3位于绝缘板的上方,且该绝缘板设置用于电极端子11通过的通孔,该通孔与电极端子11之间存在较大的间隙，从而使得穿过该通孔的电极端子11与连接片3焊接。该方案中,绝缘板的通孔处也是金属微粒容易散落的地方,且清理困难。
为解决该技术问题，如图3～图6所示，本申请实施例提供了一种电池模块A，该电池模块A可以包括电池单体1和绝缘板2，各电池单体1沿长度方向X相互堆叠，形成电池单体排列结构A1，电池单体1具有电极端子11，绝缘板2设置在电池单体1的顶部，绝缘板2可以包括本体部21，本体部21具有相对于其自身凸起的第一凸起部22。
具体地，如图4所示，第一凸起部22可以包括侧壁221和顶壁222，顶壁222通过侧壁221与本体部21连接，且二者围成收容腔，当绝缘板2与电池单体排列结构A1连接时，电极端子11的至少部分位于该收容腔，且第一凸起部22的顶壁222覆盖电极端子11的一部分。
本申请实施例提供的电池模块A，通过在电池单体1的顶部设置绝缘板2，能够对各电池单体1进行遮蔽，降低金属微粒以及其他杂质进入到各电池单体1之间的风险，并降低电池模块A的清洁难度，且该绝缘板2能够对各电池单体1和其他金属部件起到绝缘的作用，从而提高电池单体1的可靠性。在一些实施例中，绝缘板2通过第一凸起部22对电极端子11的部分进行覆盖，降低金属微粒以及其他杂质经绝缘板2进入相邻电池单体1之间的风险，且当金属微粒落在该第一凸起部22时，能够通过该第一凸起部22的侧壁221滑落于绝缘板2，从而进一步降低金属微粒进入电池模块A内部的风险，使得金属微粒以及其他杂质仅能附着在绝缘板2的表面，在焊接完成后对电池模块A进行清洁时，仅需对绝缘板2远离电池单体1一侧的表面进行清洁即可，无需对各电池单体1之间的位置进行清洁，从而降低电池模块A的清洁难度，并提高电池模块A的安全性和可靠性。
在一种可能的设计中，如图4所示，第一凸起部22的顶壁222可以设置有通孔222a，通孔222a贯穿顶壁222，并与收容腔连通，电极端子11的部分能够沿通孔222a伸出，即电极端子11的部分露出于通孔222a，该部分电极端子11可以用于与连接片3连接，二者具体可以采用焊接的方式连接，从而实现电池单体1的电连接。
本实施例中，当电极端子11的一部分沿第一凸起部22的通孔222a伸出时，不仅能够实现电极端子11与连接片3的焊接，二者焊接前，还能够通过该通孔222a对电极端子11伸出通孔222a的部分定位，从而提高连接片3的定位精度，进而提高连接片3与电极端子11之间连接的稳定性。
具体地，该电极端子11伸出通孔222a部分的侧壁可以与通孔222a的侧壁抵接，即该电极端子11与通孔222a的侧壁之间无间隙或间隙较小，从而能够进一步降低金属微粒或其他杂质落入电池模块A内部的风险。
在一种可能的设计中，如图7和图8所示，电极端子11可以包括基部 111和第一连接部112，第一连接部112相对于基部111凸出，当绝缘板2与电池单体排列结构A1连接时，第一连接部112能够沿通孔222a伸出，第一凸起部22的顶壁222覆盖基部111的至少部分。
本实施例中，当绝缘板2与电池单体排列结构A1连接时，通过将电极端子11的第一连接部112从对应的通孔222a伸出，能够通过各基部111和通孔222a的侧壁对绝缘板2和电池单体排列结构A1进行定位，从而提高绝缘板2与电池单体排列结构A1的位置精度，提高二者的连接可靠性。在一些实施例中，当绝缘板2的第一凸起部22的顶壁222覆盖对应的电极端子11的基部111的至少部分时，能够进一步降低电极端子11与绝缘板2的通孔222a之间存在间隙的风险，从而降低金属微粒或其他杂质进入收容腔的风险，进而降低金属微粒或其他杂质进入电池模块A内部的风险。
具体地，如图8所示，在一种可能的设计中，沿绝缘板2的厚度方向，第一连接部112的顶表面不低于顶壁222的顶表面，即第一连接部112相对于顶壁222齐平或凸出，这样的设计能够便于电极端子11通过第一连接部112与连接片3连接，同时便于在与连接片3连接时对连接片3以及电极端子11定位。
另一方面，如图9所示，连接片3位于绝缘板2远离电池单体1的一侧，且与电极端子11露出通孔222a的部分连接，从而便于连接片3与电极端子11焊接，且由于连接片3与电极端子11的焊接位置位于绝缘板2远离电池单体1的一侧，能够进一步降低焊接时所产生的金属微粒落入各电池单体1之间的风险，提高电池模块A的安全性和可靠性。
具体地，如图10所示，连接片3与电极端子11焊接后，该连接片3可以覆盖通孔222a，当电极端子11的第一连接部112的位置发生偏差时，使得连接片3仍然能够与第一连接部112焊接，降低因电极端子11的位置偏离预设位置导致连接片3无法与对应的电极端子11焊接的风险，进而提升连接 片3与电极端子11之间的连接稳定性，同时，由于连接片3覆盖通孔222a，使得连接片3与电极端子11之间的接触面积相对较大，从而进一步提升二者之间的连接稳定性，并能够增大电极端子11与连接片3之间的过流面积，降低连接片3和电极端子11温度过高的风险。
更具体地，如图11所示，连接片3可以包括凹陷部31和至少两个第二连接部32，各第二连接部32分别位于凹陷部31的相对两侧，第二连接部32和凹陷部31可以一体成型，凹陷部31朝向绝缘板2的方向凹陷，各第二连接部32用于与电极端子11的第一连接部112连接，在连接时，凹陷部31可位于连接片3连接的两电极端子11之间，便于对连接片3进行定位，降低因连接片3的位置出现误差导致连接片3无法与对应的电极端子11连接的风险。在一些实施例中，各第二连接部32的面积大于顶壁222的通孔222a的面积，连接件3可以通过第二连接部32覆盖各通孔222a。
如图12所示，在一种可能的设计中，绝缘板2的本体部21可以设置有容纳槽211，具体地，可以通过在本体部21设置凹陷区域，且该凹陷区域朝向电极端子11的方向凹陷，该凹陷区域以形成容纳槽211，第一凸起部22位于容纳槽211的底壁211a。
本实施例中，焊接产生的金属微粒能够从第一凸起部22的侧壁221滑落至容纳槽211内，因此，该容纳槽211用于收集连接片3与电极端子11焊接时产生的金属微粒，且在焊接结束后对电池模块A进行清洁时，仅需清洁容纳槽211即可。
具体地，如图13和14所示，在一种可能的设计中，本体部21具有多个第二凸起部24，各第二凸起部24设置在容纳槽211的底壁211a，且位于第一凸起部22的外周，第二凸起部24的凸出方向与第一凸起部22的凸出方向相同，即朝向远离电池单体1的方向凸出。连接片3与电极端子11焊接过程中产生的金属微粒会朝向远离焊接位置的方向运动，金属微粒运动的过程 中触碰到第二凸起部24时，能够在第二凸起部24的作用下被反弹或滑落至容纳槽211，以使容纳槽211能够收集焊接时产生的金属微粒，从而便于实现金属微粒的收集和清洁。
更具体地，通过第二凸起部24将容纳槽211分成不同的收集区域，各收集区域可以分别设置有第一凸起部22，第一凸起部22的数量可以为一个或多个，且通过同一连接片3连接的电极端子11可以位于同一收集区域，从而使得焊接时所产生的金属微粒落入焊接位置附近的收集区域内，更加便于清理。
上述实施例中，第二凸起部24除用于收集焊接产生的金属微粒的作用外，还可以用于对连接片3进行定位，在焊接连接片3时，可以通过使连接片3位于相邻的第二凸起部24之间，且该连接片3还能够与位于其两侧的第二凸起部24抵接，从而通过第二凸起部24对连接片3进行定位，提升连接片3的定位精度，使连接片3能够覆盖绝缘板2的通孔222a，提高连接片3与电极端子11的连接可靠性。
在一种可能的设计中，如图15所示，绝缘板2可以具有第三凸起部25，第三凸起部25设置在本体部21，其凸起方向可以和第一凸起部22以及第二凸起部24相同，即朝向远离电池单体1的方向凸起，第三凸起部25可以设置有加强结构，加强结构可以为凸起或加强筋等常用的加强结构，从而提高绝缘板2的结构强度和使用寿命。
此外，第三凸起部25可以与第二凸起部24围成收集区域，以便对焊接时产生的金属微粒进行收集，同时第三凸起部25还可以包括避让区域，避让区域的设置位置可以根据实际情况进行选取。在一种可能的设计中，避让区域用于避让柔性电路板(Flexible Printed Circuit，FPC)的端子，进而对绝缘板2的结构进行优化，降低在使用过程中绝缘板2与其他部件发生干涉的风险。
在一种可能的设计中，如图16所示，绝缘板2可以包括翻边23，翻边23设置在本体部21的外周，且延伸方向与第一凸起部22的凸起方向相同，即朝向远离电池单体1的方向延伸。在一种可能的设计中，翻边23可以用于围成容纳槽211，且当焊接产生的金属微粒触碰到翻边23时，在该翻边23的作用下，金属微粒能够被反弹并落入容纳槽211内，从而便于实现金属微粒的收集和清洁。
基于上述各实施例的电池模块A，本申请还提供了一种电池模块A的装配方法，该电池模块A包括电池单体1、绝缘板2和连接片3，其中，绝缘板2设置有第一凸起部22，第一凸起部22具有相连接的侧壁221和顶壁222，且顶壁222和侧壁221围成收容腔，顶壁222设置有通孔222a，通孔222a与收容腔连通。装配方法如下文描述。
S1：将多个电池单体1相互堆叠构成电池单体排列结构A1。
S2：沿高度方向Z，将绝缘板2放置在电池单体排列结构A1的顶部，以使电池单体1的电极端子11的一部分露出通孔222a，且第一凸起部22的顶壁222覆盖电极端子11的至少部分。
S3：连接片3连接电极端子11露出通孔222a的部分。
本实施例中，当绝缘板2与电池单体排列结构A1连接时，首先使得电极端子11的一部分露出绝缘板2的通孔222a，并使得绝缘板2的第一凸起部22覆盖电极端子11的至少部分，从而能够降低绝缘板2与电极端子11之间的出现间隙的可能，然后焊接连接片3与电极端子11露出通孔222a的部分，从而能够降低焊接产生的金属微粒经绝缘板2与电极端子11之间的间隙进入电池单体1之间的风险，从而提高电池模块A的安全性和可靠性。同时，焊接产生的金属微粒仅能停留在电池模块A的表面，从而便于清洁。
具体地，绝缘板2具有容纳槽211，在连接片3与电极端子11露出通孔222a的部分连接之前，步骤S3还可以包括下文所述的步骤。
S31：将连接片3卡接于对应的容纳槽211内。
这样的设计便于在连接片3与电极端子11连接时对连接片3进行定位，以提高连接片3与电极端子11之间相对位置的精度，进而提升连接片3与电极端子11之间的连接的稳定性。
更具体地，在绝缘板2放置于电池单体排列结构A1的顶部之前，步骤S1还可以包括下文所述的步骤。
S11：在至少部分电池单体1的顶部涂胶，和/或，在当绝缘板2的底部涂胶，以使绝缘板2与电池单体排列结构A1能够粘连。
通过在电池单体1和绝缘板2之间涂胶，以使电池单体排列结构A1能够与绝缘板2固定连接，提升二者之间连接的稳定性，从而降低因电池单体排列结构A1与绝缘板2存在相对运动而导致二者之间出现间隙的风险，从而降低金属微粒沿二者的间隙进入电池模块A内部的风险，提高电池模块A的安全性和稳定性。
以上所述仅为本申请的一些实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种电池模块(A)，包括：
    电池单体(1)，包括电极端子(11)；
    绝缘板(2)，设置于所述电池单体(1)的顶部，所述绝缘板(2)包括本体部(21)和相对于所述本体部(21)凸起的第一凸起部(22)；
    其中，所述第一凸起部(22)包括连接于所述本体部(21)的侧壁(221)以及连接于所述侧壁(221)顶部的顶壁(222)，所述侧壁(221)和所述顶壁(222)被配置为围合形成收容腔，所述电极端子(11)的至少部分容置于所述收容腔，且所述顶壁(222)覆盖部分的所述电极端子(11)。
  2. 根据权利要求1所述的电池模块(A)，其中，所述顶壁(222)设有通孔(222a)，所述通孔(222a)贯穿至所述收容腔，所述电极端子(11)的一部分露出于所述通孔(222a)。
  3. 根据权利要求2所述的电池模块(A)，其中，所述电极端子(11)包括基部(111)和凸出于所述基部(111)的第一连接部(112)，所述顶壁(222)覆盖至少部分的所述基部(111)，所述第一连接部(112)露出于所述通孔(222a)。
  4. 根据权利要求3所述的电池模块(A)，其中，沿所述绝缘板(2)的厚度方向(Z)，所述第一连接部(112)的顶表面不低于所述顶壁(222)的顶表面。
  5. 根据权利要求2-4中任意一项所述的电池模块(A)，其中，所述电池模块(A)还包括连接片(3)，所述连接片(3)位于所述绝缘板(2)的远离所述电池单体(1)的一侧；
    所述连接片(3)用于连接所述电极端子(11)露出于所述通孔(222a)的部分。
  6. 根据权利要求5所述电池模块(A)，其中，所述连接片(3)覆盖所述通孔(222a)。
  7. 根据权利要求1-6中任意一项所述的电池模块(A)，其中，所述本体部(21)设置有容纳槽(211)，所述第一凸起部(22)设置于所述容纳槽(211)的底壁(211a)。
  8. 根据权利要求7所述的电池模块(A)，其中，所述本体部(21)设置有多个连接于所述底壁(211a)的第二凸起部(24)，所述第二凸起部(24)位于所述第一凸起部(22)外周，且所述第二凸起部(24)与所述第一凸起部(22)的凸起方向相同。
  9. 根据权利要求1-8中任意一项所述的电池模块(A)，其中，所述绝缘板(2)包括翻边(23)，所述翻边(23)设置于所述本体部(21)的外周；
    所述翻边(23)的延伸方向与所述第一凸起部(22)的凸起方向相同。
  10. 一种电池组(M)，所述电池组(M)包括箱体(M1)和权利要求1-9中任一项所述的电池模块(A)，所述电池模块(A)收容于所述箱体(M1)内。
  11. 一种装置(D)，包括：
    根据权利要求10所述的电池组(M)，所述电池组(M)用于提供电能。
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